Παραπομπή σε μορφή APA (7η εκδ.)

Hill, G. E. (1977). Evaluation of southern and central Utah cloud seeding program. Utah Water Research Laboratory, College of Engineering, Utah State University.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hill, Geoffrey E. Evaluation of Southern and Central Utah Cloud Seeding Program. Logan: Utah Water Research Laboratory, College of Engineering, Utah State University, 1977.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hill, Geoffrey E. Evaluation of Southern and Central Utah Cloud Seeding Program. Utah Water Research Laboratory, College of Engineering, Utah State University, 1977.