APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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