(1992). Geology. WCB.
Tohutoru Kātū Chicago (17th ed.)Geology. Dubuque: WCB, 1992.
Tohutoro MLA (9th ed.)Geology. WCB, 1992.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
(1992). Geology. WCB.
Tohutoru Kātū Chicago (17th ed.)Geology. Dubuque: WCB, 1992.
Tohutoro MLA (9th ed.)Geology. WCB, 1992.