Cita APA (7a ed.)
Du Toit, A. L. (1927). A geological Comparison of south America with south Africa.
Cita Chicago Style (17a ed.)
Du Toit, Alexander L. A Geological Comparison of South America with South Africa. Washington, 1927.
Cita MLA (9a ed.)
Du Toit, Alexander L. A Geological Comparison of South America with South Africa. 1927.
Precaución: Estas citas no son 100% exactas.