APA (7th ed.) Citation

Washington State Horticultural Association, Washington State Horticultural Association, Washington State Horticultural Association, & Washington State Horticultural Association. Proceedings, annual meeting - Washington State Horticultural Association. Washington State Horticultural Association.

Chicago Style (17th ed.) Citation

Washington State Horticultural Association, Washington State Horticultural Association, Washington State Horticultural Association, and Washington State Horticultural Association. Proceedings, Annual Meeting - Washington State Horticultural Association. Wenatchee, Wash.: Washington State Horticultural Association.

MLA (8th ed.) Citation

Washington State Horticultural Association, et al. Proceedings, Annual Meeting - Washington State Horticultural Association. Washington State Horticultural Association.

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