Das,Bikram K. (2006). Functional grammar and spoken and written communication in English. Orient longman.
Čikaški stil citiranjaDas,Bikram K. Functional Grammar and Spoken and Written Communication in English. Hydrabad: Orient longman, 2006.
MLA način citiranjaDas,Bikram K. Functional Grammar and Spoken and Written Communication in English. Orient longman, 2006.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.