APA (7th ed.) Citation

Bierhoff, H. (1991). Attribution of responsibility and helpfulness. Altruism in social systems, 106-129.

Chicago Style (17th ed.) Citation

Bierhoff, Hans-Werner. "Attribution of Responsibility and Helpfulness." Altruism in Social Systems 1991: 106-129.

MLA (9th ed.) Citation

Bierhoff, Hans-Werner. "Attribution of Responsibility and Helpfulness." Altruism in Social Systems, 1991, pp. 106-129.