Dyfyniad APA

Merril, R. T., & Mcelhinny, M. W. (1983). Earth's magnetic field: Its history, origin and planetary perspective. Academic Press.

Dyfyniad Arddull Chicago

Merril, Ronald T., and Michael W. Mcelhinny. Earth's Magnetic Field: Its History, Origin and Planetary Perspective. London: Academic Press, 1983.

Dyfyniad MLA

Merril, Ronald T., and Michael W. Mcelhinny. Earth's Magnetic Field: Its History, Origin and Planetary Perspective. Academic Press, 1983.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.