APA
Douglas N., Bohlke D., . (2015). Reading Explorer 5. EEUU: National Geographic Learning.
Chicago
Douglas Nancy, Bohlke David, . 2015. Reading Explorer 5. EEUU: National Geographic Learning.
Harvard
Douglas N., Bohlke D., . (2015). Reading Explorer 5. EEUU: National Geographic Learning.
MLA
Douglas Nancy, Bohlke David, . Reading Explorer 5. EEUU: National Geographic Learning. 2015.