Tortell, P. (2020). Earth 2020: An Insider's Guide to a Rapidly Changing Planet. Open Book Publishers.
Chicago (17e ed.) BronvermeldingTortell, Philippe. Earth 2020: An Insider's Guide to a Rapidly Changing Planet. Open Book Publishers, 2020.
MLA (9e ed.) BronvermeldingTortell, Philippe. Earth 2020: An Insider's Guide to a Rapidly Changing Planet. Open Book Publishers, 2020.
Let op: Deze citaties zijn niet altijd 100% accuraat.