Cita APA

RENNER, J. W., Stafford, D. G., & COULTER, V. J. (1977). Variation: Learning science. MacMillan.

Citación estilo Chicago

RENNER, John W., Don G. Stafford, and Vivian Jensen COULTER. Variation: Learning Science. New York: MacMillan, 1977.

Cita MLA

RENNER, John W., et al. Variation: Learning Science. MacMillan, 1977.