Cita APA (7th ed.)
Oladipo, R. (2013). Longhorn essentials of English grammar. Longhorn.
Cita Chicago (17th ed.)
Oladipo, Rebecca. Longhorn Essentials of English Grammar. Nairobi: Longhorn, 2013.
Cita MLA (9th ed.)
Oladipo, Rebecca. Longhorn Essentials of English Grammar. Longhorn, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.