APA

Blass L., . (2013). Pathways 2. : National Geographic Learning.

Chicago

Blass Laurie, . 2013. Pathways 2. : National Geographic Learning.

Harvard

Blass L., . (2013). Pathways 2. : National Geographic Learning.

MLA

Blass Laurie, . Pathways 2. : National Geographic Learning. 2013.