Παραπομπή σε μορφή APA (7η εκδ.)

Gullas, V. (1946). Philippine government; development, organization, functions and comparative organic studies (2nd ed.). P.I.J.R. Gullas.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gullas, Vicente. Philippine Government; Development, Organization, Functions and Comparative Organic Studies. 2nd ed. Cebu City: P.I.J.R. Gullas, 1946.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gullas, Vicente. Philippine Government; Development, Organization, Functions and Comparative Organic Studies. 2nd ed. P.I.J.R. Gullas, 1946.