Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

Peterson, Roger Tory, και Margaret McKenny. A Field Guide to Wildflowers of Northeastern and North-Central North America. Houghton Mifflin, 1968.