APA aipamena

Viado, J. (1968). The natural resources position of the Philippines. [publisher not identified].

Chicago Style aipamena

Viado, Jose. The Natural Resources Position of the Philippines. [place of publication not identified]: [publisher not identified], 1968.

MLA aipamena

Viado, Jose. The Natural Resources Position of the Philippines. [publisher not identified], 1968.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.