APA (7e ed.) Bronvermelding

Ahern, C. (2009). The book of tomorrow. Harper Collins.

Chicago (17e ed.) Bronvermelding

Ahern, Cecelia. The Book of Tomorrow. London: Harper Collins, 2009.

MLA (9e ed.) Bronvermelding

Ahern, Cecelia. The Book of Tomorrow. Harper Collins, 2009.