APA (7e ed.) Bronvermelding

Peter D.Riley. (2019). Cambridge Checkpoint Science Student's Book 1 (2nd.). Hodder Education; Stu New edition (2011-05-27).

Chicago (17e ed.) Bronvermelding

Peter D.Riley. Cambridge Checkpoint Science Student's Book 1. 2nd. Hodder Education; Stu New edition (2011-05-27), 2019.

MLA (9e ed.) Bronvermelding

Peter D.Riley. Cambridge Checkpoint Science Student's Book 1. 2nd. Hodder Education; Stu New edition (2011-05-27), 2019.

Let op: Deze citaties zijn niet altijd 100% accuraat.