(美)克丽丝塔·劳森(Kristan Lawson)著. (2020). 达尔文的自然观：his life and ideas with 21 activities. 北京联合出版公司.
Chicago (17e ed.) Bronvermelding(美)克丽丝塔·劳森(Kristan Lawson)著. 达尔文的自然观：his Life and Ideas with 21 Activities. 北京联合出版公司, 2020.
MLA (8e ed.) Bronvermelding(美)克丽丝塔·劳森(Kristan Lawson)著. 达尔文的自然观：his Life and Ideas with 21 Activities. 北京联合出版公司, 2020.
Let op: Deze citaties zijn niet altijd 100% accuraat.