APA (7th ed.) Citation

Kircher, H. B., Wallace, D. L., & Gore, D. J. (1988). Our natural resources and their conservation (6th ed.). Interstate Printers & Publishers.

Chicago Style (17th ed.) Citation

Kircher, Harry B., Donald L. Wallace, and Dorothy J. Gore. Our Natural Resources and Their Conservation. 6th ed. Danville, Ill.: Interstate Printers & Publishers, 1988.

MLA (9th ed.) Citation

Kircher, Harry B., et al. Our Natural Resources and Their Conservation. 6th ed. Interstate Printers & Publishers, 1988.