The new world of academic discourse is complex and necessitates that L1 and L2 graduate students learn a multiplicity of texts, master intertextuality, and actively participate in emerging literacies or genres of their disciplines (Molle & Prior, 2008; Swales, 2004; Warren, 2013). Challenges arise about how doctoral students produce, interpret, and learn texts and genres, and how they act and react around text production in particular multicultural institutional contexts (Hyland, 2000; Prior, 2004). Little is known about how students, particularly those in higher education, establish intertextual connections among different modes of texts (e.g., written, oral, visual) for actively engaging in literacy (Belcher & Hirvela, 2008; Seloni, 2012). The purpose of this study is to examine how L1 and L2 doctoral students use intertextual practices to create meaning and develop their academic literacies during the literacy events of Global Conversations and Literacy Research (GCLR) web seminars. Drawing upon microethnographic discourse analysis, more particularly the constructs of intertextuality (Bloome, & Carter, 2013), I investigate the following questions a) How are the L1 and L2 students engaged in intertextual practices in the literacy events of GCLR web seminars? b) How does the use of intertextuality contribute to L1 and L2 students’ academic literacies? The participants are two L1 and two L2 doctoral students, who are also multilinguals, had different first languages (i.e., Korean, English, Chinese), and actively engaged in the GCLR web seminars. Data drew upon interviews, chat transcriptions, video recordings of the web seminars, and visuals. Data collection and analyses began in September 2014, and continued through November 2015. Microethnographic discourse analysis showed how participants constructed intertextual connections during the literacy events of the GCLR web seminars. The findings show how L1 and L2 doctoral students used intertextuality to socialize into academic discourse, mediate discoursal identities, and develop cultural models. The study has implications for L1 and L2 pedagogy, multilingual’s learning, and research: Future research should investigate academic literacies with intertextual connections to oral, written, and online discourses. Educators and graduate students are encouraged to exploit the full potential of intertextuality through metacognition in emerging academic literacies and mediated discoursal identities.