APA (7th ed.) Citation

Vina, P. (1950). Philippine socio-economic barriers. [publisher not identified].

Chicago Style (17th ed.) Citation

Vina, Penny. Philippine Socio-economic Barriers. Manila: [publisher not identified], 1950.

MLA (9th ed.) Citation

Vina, Penny. Philippine Socio-economic Barriers. [publisher not identified], 1950.

Warning: These citations may not always be 100% accurate.