APA (7e ed.) Bronvermelding

Clark, R. C. [. C. (2006). Index card games for esl (Third edition.). Pro Lingua Associates.

Chicago (17e ed.) Bronvermelding

Clark, Raymond C. [ Compiler]. Index Card Games for Esl. Third edition. USA: Pro Lingua Associates, 2006.

MLA (9e ed.) Bronvermelding

Clark, Raymond C. [ Compiler]. Index Card Games for Esl. Third edition. Pro Lingua Associates, 2006.