Zietlow, A. E. (1963). Biology I: A high school course. U.S. Armed Forces Institute.
Cita Chicago Style (17a ed.)Zietlow, Alfred E. Biology I: A High School Course. Madison, Wis.: U.S. Armed Forces Institute, 1963.
Cita MLA (8a ed.)Zietlow, Alfred E. Biology I: A High School Course. U.S. Armed Forces Institute, 1963.
Precaución: Estas citas no son 100% exactas.