APA (7th ed.) Citation

Charles E. Merrill Publishing Company & Hesser. (1987). Focus on earth science. Merrill.

Chicago Style (17th ed.) Citation

Charles E. Merrill Publishing Company and Hesser. Focus on Earth Science. Columbus, Ohio: Merrill, 1987.

MLA (8th ed.) Citation

Charles E. Merrill Publishing Company and Hesser. Focus on Earth Science. Merrill, 1987.

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