Schwartz, J., Tanzer, C., & Eisman, L. (1972). Biology and human progress: Workbook (4th ed.). Prentice-Hall.
Cita Chicago Style (17a ed.)Schwartz, Julius, Charles Tanzer, y Louis Eisman. Biology and Human Progress: Workbook. 4th ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1972.
Cita MLA (9a ed.)Schwartz, Julius, et al. Biology and Human Progress: Workbook. 4th ed. Prentice-Hall, 1972.
Precaución: Estas citas no son 100% exactas.