Style de citation APA (7e éd.)

Peikoff, L. (1993). THE PERCEPTUAL LEVEL AS THE GIVEN. The Ayn Rand library ; 6: Objectivism, 52-54.

Style de citation Chicago (17e éd.)

Peikoff, Leonard. "THE PERCEPTUAL LEVEL AS THE GIVEN." The Ayn Rand Library ; 6: Objectivism 1993: 52-54.

Style de citation MLA (8e éd.)

Peikoff, Leonard. "THE PERCEPTUAL LEVEL AS THE GIVEN." The Ayn Rand Library ; 6: Objectivism, 1993, pp. 52-54.