Cita APA (7a ed.)

Science Curriculum Improvement Study, Conard, D., & Lawson, C. A. (1969). Populations (Preliminary ed.). Science Curriculum Improvement Study, Lawrence Hall of Science, University of California.

Cita Chicago Style (17a ed.)

Science Curriculum Improvement Study, David Conard, y Chester A. Lawson. Populations. Preliminary ed. [Berkeley, Calif.: Science Curriculum Improvement Study, Lawrence Hall of Science, University of California, 1969.

Cita MLA (8a ed.)

Science Curriculum Improvement Study, et al. Populations. Preliminary ed. Science Curriculum Improvement Study, Lawrence Hall of Science, University of California, 1969.