APA (7th ed.) Citation

Pederson, C. F., Bedells, J., & Peterson, W. (1971). The international Flag Book in color. Morrow.

Chicago Style (17th ed.) Citation

Pederson, Christian Fogd, John Bedells, and Wilhelm Peterson. The International Flag Book in Color. New York: Morrow, 1971.

MLA (8th ed.) Citation

Pederson, Christian Fogd, et al. The International Flag Book in Color. Morrow, 1971.