Cita APA (7th ed.)

Smith, J. P. J. (1977). Vascular plant families: An introduction to the families of vascular plants native to North America and selected families of ornamental or economic importance. Mad River Press.

Cita Chicago (17th ed.)

Smith, James Payne Jr. Vascular Plant Families: An Introduction to the Families of Vascular Plants Native to North America and Selected Families of Ornamental or Economic Importance. Eureka, California: Mad River Press, 1977.

Cita MLA (9th ed.)

Smith, James Payne Jr. Vascular Plant Families: An Introduction to the Families of Vascular Plants Native to North America and Selected Families of Ornamental or Economic Importance. Mad River Press, 1977.