Cita APA (7a ed.)

Williams, R. D., & Hanks, s. H. (1976). Hardwood Nurseryman's guide. U.S.Department of agriculture.

Cita Chicago Style (17a ed.)

Williams, Robert D., y sidney H. Hanks. Hardwood Nurseryman's Guide. Washigton: U.S.Department of agriculture, 1976.

Cita MLA (9a ed.)

Williams, Robert D., y sidney H. Hanks. Hardwood Nurseryman's Guide. U.S.Department of agriculture, 1976.