Cita APA (7a ed.)

Schopf, J. W. (1992). Major events in the history of life. Jones and Bartlett.

Cita Chicago Style (17a ed.)

Schopf, J. William. Major Events in the History of Life. Boston [etc.]: Jones and Bartlett, 1992.

Cita MLA (9a ed.)

Schopf, J. William. Major Events in the History of Life. Jones and Bartlett, 1992.