APA (7th ed.) Citation

Karner, T. (2002). The volunteer effect of answering personality questionnaires. Psychologische Beiträge, 44(1), 42-49.

Chicago Style (17th ed.) Citation

Karner, Thomas. "The Volunteer Effect of Answering Personality Questionnaires." Psychologische Beiträge 44, no. 1 (2002): 42-49.

MLA (8th ed.) Citation

Karner, Thomas. "The Volunteer Effect of Answering Personality Questionnaires." Psychologische Beiträge, vol. 44, no. 1, 2002, pp. 42-49.