Simpson, I. M. (1977). Fieldwork in geology. Allen & Unwin.
Cita Chicago Style (17a ed.)Simpson, Ian Morven. Fieldwork in Geology. London, Boston: Allen & Unwin, 1977.
Cita MLA (9a ed.)Simpson, Ian Morven. Fieldwork in Geology. Allen & Unwin, 1977.
Precaución: Estas citas no son 100% exactas.