APA (7e ed.) Bronvermelding

Amy Shields. (2011). National Geographic Readers: Trains. National Geographic Children's Books.

Chicago (17e ed.) Bronvermelding

Amy Shields. National Geographic Readers: Trains. National Geographic Children's Books, 2011.

MLA (9e ed.) Bronvermelding

Amy Shields. National Geographic Readers: Trains. National Geographic Children's Books, 2011.

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