Cita APA (7a ed.)
Schwartz, H. F. (1989). Additional problems. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Schwartz, Howard F. Additional Problems. International Center for Tropical Agriculture, 1989.
Cita MLA (9a ed.)
Schwartz, Howard F. Additional Problems. International Center for Tropical Agriculture, 1989.
Precaución: Estas citas no son 100% exactas.