Cita APA (7a ed.)

Feather, R. M., Snyder, S. L., & T Hesser, D. (1993). Merrill earth science. McGraw-Hill.

Cita Chicago Style (17a ed.)

Feather, Ralph M., Susan Leach Snyder, y Dale T Hesser. Merrill Earth Science. New York: McGraw-Hill, 1993.

Cita MLA (8a ed.)

Feather, Ralph M., et al. Merrill Earth Science. McGraw-Hill, 1993.