Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.