Cita APA (7th ed.)

Feather, R. M., & Snyder, S. L. (1999). Glencoe earth science. Glencoe/McGraw Hill.

Cita Chicago (17th ed.)

Feather, Ralph M., i Susan Leach Snyder. Glencoe Earth Science. New york: Glencoe/McGraw Hill, 1999.

Cita MLA (9th ed.)

Feather, Ralph M., i Susan Leach Snyder. Glencoe Earth Science. Glencoe/McGraw Hill, 1999.