APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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