APA Citation

Hesser, D. T., & Leach, S. S. (1989). Focus on earth science. Columbus, Ohio: Merrill.

Chicago Style Citation

Hesser, Dale T., and Susan S. Leach. Focus On Earth Science. Columbus, Ohio: Merrill, 1989.

MLA Citation

Hesser, Dale T., and Susan S. Leach. Focus On Earth Science. Columbus, Ohio: Merrill, 1989.

Warning: These citations may not always be 100% accurate.