APA (7th ed.) Citation

Audubon Society of Portland, Davis, J., Pugh, E., Ward, J., & Ward, W. (1988). Familiar bird songs of the Northwest. Portland Audubon Society.

Chicago Style (17th ed.) Citation

Audubon Society of Portland, James Davis, Eleanor Pugh, Jean Ward, and William Ward. Familiar Bird Songs of the Northwest. Portland, Or.: Portland Audubon Society, 1988.

MLA (8th ed.) Citation

Audubon Society of Portland, et al. Familiar Bird Songs of the Northwest. Portland Audubon Society, 1988.

Warning: These citations may not always be 100% accurate.