APA-viite

A J Ayer. (2004). Foundations of empirical knowledge A J Ayer 1940 v.2: A J Ayer: Writings on Philosophy. Palgrave.

Chicago-tyylinen lähdeviittaus

A J Ayer. Foundations of Empirical Knowledge A J Ayer 1940 V.2: A J Ayer: Writings on Philosophy. Hampshire: Palgrave, 2004.

MLA-viite

A J Ayer. Foundations of Empirical Knowledge A J Ayer 1940 V.2: A J Ayer: Writings on Philosophy. Palgrave, 2004.