APA (7e ed.) Bronvermelding

Rockcastle, V. N., Salomon, F. R., & Schmidt, V. E. (1975). Elementary school science, level 4. Addison-Wesley.

Chicago (17e ed.) Bronvermelding

Rockcastle, Verne N., Frank R. Salomon, en Victor E. Schmidt. Elementary School Science, Level 4. Menlo Park, CA: Addison-Wesley, 1975.

MLA (9e ed.) Bronvermelding

Rockcastle, Verne N., et al. Elementary School Science, Level 4. Addison-Wesley, 1975.