Citace podle APA

Peterson, R. T., & McKenny, M. (1968). A field guide to wildflowers of Northeastern and North-central North America. Boston: Houghton Mifflin Company.

Styl Chicago

Peterson, Roger Tory, and Margaret McKenny. A Field Guide to Wildflowers of Northeastern and North-central North America. Boston: Houghton Mifflin Company, 1968.

Citace podle MLA

Peterson, Roger Tory, and Margaret McKenny. A Field Guide to Wildflowers of Northeastern and North-central North America. Boston: Houghton Mifflin Company, 1968.

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