Cita APA (7a ed.)

Du Plessis, N. (1970). An introduction to potential theory. Oliver & Boyd.

Cita Chicago Style (17a ed.)

Du Plessis, Nicolaas. An Introduction to Potential Theory. Edinburgh,: Oliver & Boyd, 1970.

Cita MLA (8a ed.)

Du Plessis, Nicolaas. An Introduction to Potential Theory. Oliver & Boyd, 1970.