Optimism works both ways

MLA

Sherry, David, and Thomas Geiger. Optimism Works Both Ways. Karlsuhe: Weingrüll, 2013.

APA

Sherry, D., & Geiger, T. (2013). Optimism works both ways. Karlsuhe: Weingrüll.

Chicago

Sherry, David, and Thomas Geiger. Optimism Works Both Ways. Karlsuhe: Weingrüll, 2013.