APA (7th ed.) Citation

Cruz, C. C. (1931). The Mountain Province: A geographic study of its assets, possibilities, and handicaps. [publisher not identified].

Chicago Style (17th ed.) Citation

Cruz, Cornelio C. The Mountain Province: A Geographic Study of Its Assets, Possibilities, and Handicaps. [Manila]: [publisher not identified], 1931.

MLA (9th ed.) Citation

Cruz, Cornelio C. The Mountain Province: A Geographic Study of Its Assets, Possibilities, and Handicaps. [publisher not identified], 1931.