Cita APA (7a ed.)

Edwards, R. G., Head, J. J., & Khoury, D. (1981). The beginnings of human life. Carolina Biological Supply, Scientific Publications Department.

Cita Chicago Style (17a ed.)

Edwards, R. G., J. J. Head, y Diana Khoury. The Beginnings of Human Life. Burlington, N.C.: Carolina Biological Supply, Scientific Publications Department, 1981.

Cita MLA (8a ed.)

Edwards, R. G., et al. The Beginnings of Human Life. Carolina Biological Supply, Scientific Publications Department, 1981.