APA (7th ed.) Citation

Bear, F. E., Pritchard, H. W., & Akin, W. E. (1986). Earth: The stuff of life (2nd ed.). University of Oklahoma Press.

Chicago Style (17th ed.) Citation

Bear, Firman E., H. Wayne Pritchard, and Wallace E. Akin. Earth: The Stuff of Life. 2nd ed. Norman: University of Oklahoma Press, 1986.

MLA (9th ed.) Citation

Bear, Firman E., et al. Earth: The Stuff of Life. 2nd ed. University of Oklahoma Press, 1986.