Cita APA (7th ed.)
Feathe, R. M., Snyder, S. L., & Hesser, D. T. (1995). Merrill earth science. Glencoe / McGraw - Hill.
Cita Chicago (17th ed.)
Feathe, Ralph M., Susan Leach Snyder, i Dale T. Hesser. Merrill Earth Science. New York: Glencoe / McGraw - Hill, 1995.
Cita MLA (9th ed.)
Feathe, Ralph M., et al. Merrill Earth Science. Glencoe / McGraw - Hill, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.