Cita APA (7a ed.)

Gould, J. L., & Grant Gould, C. (1989). Life at the edge: Readings from scientific Américan magazine. W. H. Freeman and company.

Cita Chicago Style (17a ed.)

Gould, James L., y Carol Grant Gould. Life at the Edge: Readings from Scientific Américan Magazine. New York: W. H. Freeman and company, 1989.

Cita MLA (8a ed.)

Gould, James L., y Carol Grant Gould. Life at the Edge: Readings from Scientific Américan Magazine. W. H. Freeman and company, 1989.