Peterson, R. T. (1986). Peterson first guide to wildflowers of northeastern and north-central North America. Houghton Mifflin.
Цитирование в стиле Чикаго (17-е изд.)Peterson, Roger Tory. Peterson First Guide to Wildflowers of Northeastern and North-central North America. Boston: Houghton Mifflin, 1986.
Цитирование MLA (8-е изд.)Peterson, Roger Tory. Peterson First Guide to Wildflowers of Northeastern and North-central North America. Houghton Mifflin, 1986.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.