APA aipamena

Penano, L. C. Z. (1973). Socio-psychological predictors of academic achievement. s.n.].

Chicago Style aipamena

Penano, Leticia Cecilia Zabala. Socio-psychological Predictors of Academic Achievement. [Quezon City: s.n.], 1973.

MLA aipamena

Penano, Leticia Cecilia Zabala. Socio-psychological Predictors of Academic Achievement. s.n.], 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.