Cita APA (7th ed.)

Oladipo, R. (2013). Longhorn essentials of English grammar.

Cita Chicago (17th ed.)

Oladipo, Rebecca. Longhorn Essentials of English Grammar. Nairobi, 2013.

Cita MLA (9th ed.)

Oladipo, Rebecca. Longhorn Essentials of English Grammar. 2013.