Gaya APA

Covington, M, V., Beery, R, G. (1938). Self-Worth And School learning . America: Holt,Rnehart and wiston.

Gaya MLA

Covington, Martin, V.., Beery, Richard, G.. "Self-Worth And School learning". America: Holt,Rnehart and wiston, 1938. Text.