Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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