Παραπομπή σε μορφή APA (7η εκδ.)

Cumming, I. S., & Read, J. R. L. (1973). Engineering geology of the Rouna No. 2 Hydro-Electric Scheme, Central District. Geological Survey of Papua New Guinea.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cumming, I. S., και J. R. L. Read. Engineering Geology of the Rouna No. 2 Hydro-Electric Scheme, Central District. [Port Moreseby]: Geological Survey of Papua New Guinea, 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cumming, I. S., και J. R. L. Read. Engineering Geology of the Rouna No. 2 Hydro-Electric Scheme, Central District. Geological Survey of Papua New Guinea, 1973.