Cita APA (7th ed.)

De Guzman, M. O. (1973). Grammar and idioms self-taught. G.O.T. Pub.

Cita Chicago (17th ed.)

De Guzman, Maria Odulio. Grammar and Idioms Self-taught. [Manila]: G.O.T. Pub, 1973.

Cita MLA (9th ed.)

De Guzman, Maria Odulio. Grammar and Idioms Self-taught. G.O.T. Pub, 1973.