Παραπομπή σε μορφή APA (7η εκδ.)

Jennings, J. R., & Spurgeon, P. A. (1985). Pennsylvanian plants of Eastern Kentucky: A flora from the Breathitt formation near Grannies Branch and Rocky Branch of Goose Creek, Clay country, Kentucky. Kentucky Geological Survey.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Jennings, James R., και Paul A. Spurgeon. Pennsylvanian Plants of Eastern Kentucky: A Flora from the Breathitt Formation Near Grannies Branch and Rocky Branch of Goose Creek, Clay Country, Kentucky. Lexington: Kentucky Geological Survey, 1985.

Παραπομπή σε μορφή MLA (9th εκδ.)

Jennings, James R., και Paul A. Spurgeon. Pennsylvanian Plants of Eastern Kentucky: A Flora from the Breathitt Formation Near Grannies Branch and Rocky Branch of Goose Creek, Clay Country, Kentucky. Kentucky Geological Survey, 1985.