Gaya APA

Porte, G, K. (2002). Appraising Research in Second Language Learning: A Practical Approach to Critical Analisys of Quantitative Research . United States of America: John Benjamins Publishing Company.

Gaya MLA

Porte, Graeme, Keith. "Appraising Research in Second Language Learning: A Practical Approach to Critical Analisys of Quantitative Research". United States of America: John Benjamins Publishing Company, 2002. Text.