Peterson, R. T. (1986). Peterson first guide to wildflowers of northeastern and north-central North America. Houghton Mifflin.
Style de citation Chicago (17e éd.)Peterson, Roger Tory. Peterson First Guide to Wildflowers of Northeastern and North-central North America. Boston: Houghton Mifflin, 1986.
Style de citation MLA (8e éd.)Peterson, Roger Tory. Peterson First Guide to Wildflowers of Northeastern and North-central North America. Houghton Mifflin, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.