Cita APA (7a ed.)

Gupta, V. (2009). Vocabulary and Comprehension Skills. Penguin Books.

Cita Chicago Style (17a ed.)

Gupta, Vaishali. Vocabulary and Comprehension Skills. USA: Penguin Books, 2009.

Cita MLA (9a ed.)

Gupta, Vaishali. Vocabulary and Comprehension Skills. Penguin Books, 2009.