APA (7e ed.) Bronvermelding

Beiser, A. (1959). Our earth: The properties of our planet, how they were discovered and how they came into being. New York : Dutton.

Chicago (17e ed.) Bronvermelding

Beiser, Arthur. Our Earth: The Properties of Our Planet, How They Were Discovered and How They Came into Being. New York : Dutton, 1959.

MLA (9e ed.) Bronvermelding

Beiser, Arthur. Our Earth: The Properties of Our Planet, How They Were Discovered and How They Came into Being. New York : Dutton, 1959.

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