APA-Zitierstil (7. Ausg.)

Jirsa, M. A., Olsen, B. M., & Bloomgren, B. A. (1986). Bedrock geologic and topographic maps of the seven-country twin cities metropolitan area, Minnesota. Univ. of Minnesota.

Chicago-Zitierstil (17. Ausg.)

Jirsa, Mark A., Bruce M. Olsen, und Bruce A. Bloomgren. Bedrock Geologic and Topographic Maps of the Seven-country Twin Cities Metropolitan Area, Minnesota. St. Paul: Univ. of Minnesota, 1986.

MLA-Zitierstil (9. Ausg.)

Jirsa, Mark A., et al. Bedrock Geologic and Topographic Maps of the Seven-country Twin Cities Metropolitan Area, Minnesota. Univ. of Minnesota, 1986.