APA-viite (7. p.)

George, J. E. (1978). Manual for groundwater exploitation in Papua New Guinea. Dept. of Minerals and Energy.

Chicago-viite (17. p.)

George, J. E. Manual for Groundwater Exploitation in Papua New Guinea. Port Moresby: Dept. of Minerals and Energy, 1978.

MLA-viite (9. p.)

George, J. E. Manual for Groundwater Exploitation in Papua New Guinea. Dept. of Minerals and Energy, 1978.