Cita APA

Freeman, T. 1., & Freeman, T. 1. (1999). Procedures in field Geology. Malden, Mass: Blackwell Science.

Citación estilo Chicago

Freeman, Tom 1932-, y Tom 1932- Freeman. Procedures in Field Geology. Malden, Mass: Blackwell Science, 1999.

Cita MLA

Freeman, Tom 1932-, y Tom 1932- Freeman. Procedures in Field Geology. Malden, Mass: Blackwell Science, 1999.