MLA

Stephen R. Jones, and Ruth Carol Cushman. A Field Guide to the North American Prairie. Boston: Houghton Mifflin, 2004.

APA

Stephen R. Jones, S. R. Jones, & Ruth Carol Cushman, R. Carol Cushman. (2004). A Field Guide to the North American Prairie. Boston: Houghton Mifflin.

Chicago

Stephen R. Jones, and Ruth Carol Cushman. A Field Guide to the North American Prairie. : Boston: Houghton Mifflin, 2004.