APA (7e ed.) Bronvermelding
Wells, W. (2009). Apocalypse When?: Calculating How Long the Human Race Will Survive. Praxis. https://doi.org/10.1007/978-0-387-09837-1
Chicago (17e ed.) Bronvermelding
Wells, Willard. Apocalypse When?: Calculating How Long the Human Race Will Survive. New York, NY: Praxis, 2009. https://doi.org/10.1007/978-0-387-09837-1.
MLA (9e ed.) Bronvermelding
Wells, Willard. Apocalypse When?: Calculating How Long the Human Race Will Survive. Praxis, 2009. https://doi.org/10.1007/978-0-387-09837-1.
Let op: Deze citaties zijn niet altijd 100% accuraat.