APA (7th ed.) Citation

Dember, W. N. (1989). Optimism and pessimism questionnaire. Department of Psychology, University of Cincinnati.

Chicago Style (17th ed.) Citation

Dember, William N. Optimism and Pessimism Questionnaire. Cincinnati, Ohio: Department of Psychology, University of Cincinnati, 1989.

MLA (9th ed.) Citation

Dember, William N. Optimism and Pessimism Questionnaire. Department of Psychology, University of Cincinnati, 1989.