APA (7th ed.) Citation

Douglas, N., & Bohlke, D. (2015). Reading explorer 1 (Second edition.). National Geographic Learning.

Chicago Style (17th ed.) Citation

Douglas, Nancy, and David Bohlke. Reading Explorer 1. Second edition. Boston: National Geographic Learning, 2015.

MLA (9th ed.) Citation

Douglas, Nancy, and David Bohlke. Reading Explorer 1. Second edition. National Geographic Learning, 2015.

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