APA (7th ed.) Citation

Gronberg, M., & Nutting, L. (1986). Rock hunting in Texas. Lone Star Books.

Chicago Style (17th ed.) Citation

Gronberg, Margaret, and Linda Nutting. Rock Hunting in Texas. Houston, Tex.: Lone Star Books, 1986.

MLA (9th ed.) Citation

Gronberg, Margaret, and Linda Nutting. Rock Hunting in Texas. Lone Star Books, 1986.