APA (7e ed.) Bronvermelding

SALES, R. [. (1978). Children's Britannica 18: Tracks - walls and fences. Encyclopaedia Britannica International.

Chicago (17e ed.) Bronvermelding

SALES, Robin [Ed.]. Children's Britannica 18: Tracks - Walls and Fences. London: Encyclopaedia Britannica International, 1978.

MLA (9e ed.) Bronvermelding

SALES, Robin [Ed.]. Children's Britannica 18: Tracks - Walls and Fences. Encyclopaedia Britannica International, 1978.

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