APA (7 वां संस्करण) प्रशस्ति पत्र
Wallwork, A. (2011). English for Academic Correspondence and Socializing. Springer US. https://doi.org/10.1007/978-1-4419-9401-1
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Wallwork, Adrian. English for Academic Correspondence and Socializing. Boston, MA: Springer US, 2011. https://doi.org/10.1007/978-1-4419-9401-1.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Wallwork, Adrian. English for Academic Correspondence and Socializing. Springer US, 2011. https://doi.org/10.1007/978-1-4419-9401-1.
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