APA (7th ed.) Citation

Lessa, W. A. (1974). Francis Drake in Mindanao. s.n.

Chicago Style (17th ed.) Citation

Lessa, William A. Francis Drake in Mindanao. S.l: s.n, 1974.

MLA (9th ed.) Citation

Lessa, William A. Francis Drake in Mindanao. s.n, 1974.