APA (7e ed.) Bronvermelding

Sneider, C. I. (1986). Earth, moon and stars: Teacher's guide grades 5-9. Great Explorations in Math and Science (GEMS), Lawrence Hall of Science, 1998.

Chicago (17e ed.) Bronvermelding

Sneider, Cary Ivan. Earth, Moon and Stars: Teacher's Guide Grades 5-9. Berkeley, CA: Great Explorations in Math and Science (GEMS), Lawrence Hall of Science, 1998, 1986.

MLA (9e ed.) Bronvermelding

Sneider, Cary Ivan. Earth, Moon and Stars: Teacher's Guide Grades 5-9. Great Explorations in Math and Science (GEMS), Lawrence Hall of Science, 1998, 1986.