Cita APA (7th ed.)

Colquhoun, E. M. C. (1976). Two on their travels [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago (17th ed.)

Colquhoun, Ethel Maud Cookson. Two on Their Travels [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.

Cita MLA (9th ed.)

Colquhoun, Ethel Maud Cookson. Two on Their Travels [microform]. Photoduplication Service. University of the Philippines Library, 1976.