APA (7e ed.) Bronvermelding

Santayana, G. (1928). The realm of essence: Book first of Realms of being. Constable.

Chicago (17e ed.) Bronvermelding

Santayana, George. The Realm of Essence: Book First of Realms of Being. London: Constable, 1928.

MLA (8e ed.) Bronvermelding

Santayana, George. The Realm of Essence: Book First of Realms of Being. Constable, 1928.

Let op: Deze citaties zijn niet altijd 100% accuraat.