Cita APA

Ackert, P., & Lee, L. (2005). Cause & effect (4. ed.). Boston, Mass.: Heinle Cengage Learning.

Citación estilo Chicago

Ackert, Patricia, y Linda Lee. Cause & Effect. 4. ed. Boston, Mass.: Heinle Cengage Learning, 2005.

Cita MLA

Ackert, Patricia, y Linda Lee. Cause & Effect. 4. ed. Boston, Mass.: Heinle Cengage Learning, 2005.