Παραπομπή APA

Gardner, J. W. (1967). Excellence: Can We Be Equal and Excellent Too? Universal Book Stall.

Παραπομπή Chicago Style

Gardner, John W. Excellence: Can We Be Equal and Excellent Too? Delhi: Universal Book Stall, 1967.

Παραπομπή MLA

Gardner, John W. Excellence: Can We Be Equal and Excellent Too? Universal Book Stall, 1967.