GREEN JEN. (2019). THE ENVIRONMENT CHALLENGE - REDUCING POLLUTION AND WASTE (2014 Ed.). RAINTREE PUBLISHERS.
Chicago (17e ed.) BronvermeldingGREEN JEN. THE ENVIRONMENT CHALLENGE - REDUCING POLLUTION AND WASTE. 2014 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
MLA (9e ed.) BronvermeldingGREEN JEN. THE ENVIRONMENT CHALLENGE - REDUCING POLLUTION AND WASTE. 2014 Ed. RAINTREE PUBLISHERS, 2019.
Let op: Deze citaties zijn niet altijd 100% accuraat.