APA (7e ed.) Bronvermelding

Saffer, B. (1999). Science questions & answers: The ocean :for ages 6-8. Lowell House Juvenile.

Chicago (17e ed.) Bronvermelding

Saffer, Barbara. Science Questions & Answers: The Ocean :for Ages 6-8. Los Angeles: Lowell House Juvenile, 1999.

MLA (8e ed.) Bronvermelding

Saffer, Barbara. Science Questions & Answers: The Ocean :for Ages 6-8. Lowell House Juvenile, 1999.