Παραπομπή σε μορφή APA (7η εκδ.)

Buleka, J., & King, J. (1988). Geological mapping of Manugoro quarry, Central Province. Geological Survey of Papua New Guinea.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Buleka, J., και J. King. Geological Mapping of Manugoro Quarry, Central Province. Port Moresby: Geological Survey of Papua New Guinea, 1988.

Παραπομπή σε μορφή MLA (9th εκδ.)

Buleka, J., και J. King. Geological Mapping of Manugoro Quarry, Central Province. Geological Survey of Papua New Guinea, 1988.