Steward, A. N. (1960). Aquatic plants of the Pacific Northwest: With vegetative keys. Oregon State College.
Цитирование в стиле Чикаго (17-е изд.)Steward, Albert Newton. Aquatic Plants of the Pacific Northwest: With Vegetative Keys. Corvallis: Oregon State College, 1960.
Цитирование MLA (8-е изд.)Steward, Albert Newton. Aquatic Plants of the Pacific Northwest: With Vegetative Keys. Oregon State College, 1960.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.