APA (7 ম সংস্করণ) উদ্ধৃতি
Williams, D., & Butler, B. (2010). The Tallgrass Prairie Center guide to seed and seedling identification in the Upper Midwest. Published for the Tallgrass Prairie Center by the University of Iowa Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি
Williams, Dave, এবং Brent Butler. The Tallgrass Prairie Center Guide to Seed and Seedling Identification in the Upper Midwest. Iowa City: Published for the Tallgrass Prairie Center by the University of Iowa Press, 2010.
M.L.A (9 ম সংস্করণ) উদ্ধৃতি
Williams, Dave, এবং Brent Butler. The Tallgrass Prairie Center Guide to Seed and Seedling Identification in the Upper Midwest. Published for the Tallgrass Prairie Center by the University of Iowa Press, 2010.
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