APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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