APA Citation

Obee, B., & Obee, B. (1999). The grammar activity book. Cambridge, UK: Cambridge University.

Chicago Style Citation

Obee, Bob, and Bob Obee. The Grammar Activity Book. Cambridge, UK: Cambridge University, 1999.

MLA Citation

Obee, Bob, and Bob Obee. The Grammar Activity Book. Cambridge, UK: Cambridge University, 1999.

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