APA (7th ed.) Citation

Landis, E. R., & Van Eck, O. J. (1965). Coal resources of Iowa. State of Iowa.

Chicago Style (17th ed.) Citation

Landis, Edwin R., and Orville J. Van Eck. Coal Resources of Iowa. Iowa City, Iowa: State of Iowa, 1965.

MLA (9th ed.) Citation

Landis, Edwin R., and Orville J. Van Eck. Coal Resources of Iowa. State of Iowa, 1965.