Cita APA (7th ed.)

NEUMAN, D. (1980). English grammar for proficiency. D.M. Neuman.

Cita Chicago (17th ed.)

NEUMAN, D.M. English Grammar for Proficiency. Nairobi: D.M. Neuman, 1980.

Cita MLA (9th ed.)

NEUMAN, D.M. English Grammar for Proficiency. D.M. Neuman, 1980.

Atenció: Aquestes cites poden no estar 100% correctes.