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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Washington State Horticultural Association, Washington State Horticultural Association, Washington State Horticultural Association, و Washington State Horticultural Association. Proceedings, Annual Meeting - Washington State Horticultural Association. Wenatchee, Wash.: Washington State Horticultural Association.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Washington State Horticultural Association, et al. Proceedings, Annual Meeting - Washington State Horticultural Association. Washington State Horticultural Association.