Cita APA (7th ed.)

Houston, R. (1999). The Action Asia adventure travel guide to the Philippines. AAP.

Cita Chicago (17th ed.)

Houston, Robert. The Action Asia Adventure Travel Guide to the Philippines. Hong Kong: AAP, 1999.

Cita MLA (9th ed.)

Houston, Robert. The Action Asia Adventure Travel Guide to the Philippines. AAP, 1999.