APA (7th ed.) Zitazioa

Patel, M. (1986). Progress in English (Rev.ed.). Jyoti Bindu.

Chicago Style (17th ed.) Zitazioa

Patel, M.S. Progress in English. Rev.ed. Nairobi: Jyoti Bindu, 1986.

MLA (9th ed.) Zitazioa

Patel, M.S. Progress in English. Rev.ed. Jyoti Bindu, 1986.