Citação norma APA

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

Citação norma Chicago

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

Citação norma MLA

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

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.