Punitha, S. (2008). Spoken English: A foundation course (With CD)- Part I. Orient Longman.
Chicago-referens (17:e uppl.)Punitha, Susheela. Spoken English: A Foundation Course (With CD)- Part I. Hyderabad: Orient Longman, 2008.
MLA-referens (9:e uppl.)Punitha, Susheela. Spoken English: A Foundation Course (With CD)- Part I. Orient Longman, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.