APA (7th ed.) Citation

Soroñgon, R. G. (1983). The first guide to climbing Mt. Apo.

Chicago Style (17th ed.) Citation

Soroñgon, Reynaldo G. The First Guide to Climbing Mt. Apo. Davao City, National Media Production Center, 1983.

MLA (9th ed.) Citation

Soroñgon, Reynaldo G. The First Guide to Climbing Mt. Apo. 1983.