Cita APA (7th ed.)

Sajnani, K. (2007). Enhance your english proficiency (2nd.).

Cita Chicago (17th ed.)

Sajnani, Kamlesh. Enhance Your English Proficiency. 2nd. Mumbai, 2007.

Cita MLA (9th ed.)

Sajnani, Kamlesh. Enhance Your English Proficiency. 2nd. 2007.