Cita APA (7th ed.)

De Villa, J. G. (1988). Philippine vacations and explorations. Devcon I.P.

Cita Chicago (17th ed.)

De Villa, Jill Gale. Philippine Vacations and Explorations. Manila: Devcon I.P, 1988.

Cita MLA (9th ed.)

De Villa, Jill Gale. Philippine Vacations and Explorations. Devcon I.P, 1988.