Cita APA (7th ed.)

Boehm, R. G., Bybee, L. L., & Petersen, J. F. (1996). Building skills in geography: Text-workbook. Glencoe/McGraw-Hill.

Cita Chicago (17th ed.)

Boehm, Richard G., Larry L. Bybee, i James F. Petersen. Building Skills in Geography: Text-workbook. New York: Glencoe/McGraw-Hill, 1996.

Cita MLA (9th ed.)

Boehm, Richard G., et al. Building Skills in Geography: Text-workbook. Glencoe/McGraw-Hill, 1996.