Cita APA (7a ed.)

Williamson, A., Hancock, G., & Corbet, G. (2005). The geology and mineral potential of Papua New Guinea. Papua New guinea Department of Mining.

Cita Chicago Style (17a ed.)

Williamson, Anthony, Graeme Hancock, y Greg Corbet. The Geology and Mineral Potential of Papua New Guinea. Port Moresby, papua New Guinea: Papua New guinea Department of Mining, 2005.

Cita MLA (9a ed.)

Williamson, Anthony, et al. The Geology and Mineral Potential of Papua New Guinea. Papua New guinea Department of Mining, 2005.