Cita APA (7th ed.)

De Guzman, M. O. Model letters for all occasions, and Sentence stress and emphasis. G.O.T. Publishers.

Cita Chicago (17th ed.)

De Guzman, Maria Odulio. Model Letters for All Occasions, and Sentence Stress and Emphasis. [Manila]: G.O.T. Publishers.

Cita MLA (9th ed.)

De Guzman, Maria Odulio. Model Letters for All Occasions, and Sentence Stress and Emphasis. G.O.T. Publishers.