Sculpture : : Processes and principles.

MLA

Wittkower, Rudolf. Sculpture : Processes and Principles. Harmondsworth: Penguin Books, 1979.

APA

Wittkower, R. (1979). Sculpture : Processes and principles. Harmondsworth: Penguin Books.

Chicago

Wittkower, Rudolf Sculpture: Processes and Principles. Harmondsworth: Penguin Books, 1979.