Παραπομπή σε μορφή APA (7η εκδ.)

Lawton, R., Lawton, D., Panttaja, S., & Guidici Ehret, I. (1997). Discover nature in the rocks: Things to know and things to do. Stackpole Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lawton, Rebecca, Diana Lawton, Susan Panttaja, και Irene Guidici Ehret. Discover Nature in the Rocks: Things to Know and Things to Do. Mechanicsburg, PA: Stackpole Books, 1997.

Παραπομπή σε μορφή MLA (8th εκδ.)

Lawton, Rebecca, et al. Discover Nature in the Rocks: Things to Know and Things to Do. Stackpole Books, 1997.