APA (7th ed.) Citation

Ramsey, W., & Burckley, R. A. (1996). Modern earth science. KEN.

Chicago Style (17th ed.) Citation

Ramsey, William, and Raymond A. Burckley. Modern Earth Science. Quezon City: KEN, 1996.

MLA (9th ed.) Citation

Ramsey, William, and Raymond A. Burckley. Modern Earth Science. KEN, 1996.