APA (7th ed.) Citation

Hillman, L. E. (1989). Nature puzzlers. Teacher Ideas Press.

Chicago Style (17th ed.) Citation

Hillman, Lawrence E. Nature Puzzlers. Englewood, Colo.: Teacher Ideas Press, 1989.

MLA (9th ed.) Citation

Hillman, Lawrence E. Nature Puzzlers. Teacher Ideas Press, 1989.

Warning: These citations may not always be 100% accurate.