APA Style

Douglas, Nancy, Bohlke, David. (2015). Reading Explorer (2nd Edition). : National Geographic Learning.

Chicago Style

Douglas, Nancy, Bohlke, David. Reading Explorer. 2nd Edition : National Geographic Learning, 2015. Text.

MLA Style

Douglas, Nancy, Bohlke, David. Reading Explorer. 2nd Edition : National Geographic Learning, 2015. Text.

Turabian Style

Douglas, Nancy, Bohlke, David. Reading Explorer. 2nd Edition : National Geographic Learning, 2015. Print.