APA
, Gary B. Swanson, . (2007). Perspective digest. Silver Spring, MD: Epiphany Printing.
Chicago
, Gary B. Swanson, . 2007. Perspective digest. Silver Spring, MD: Epiphany Printing.
Harvard
, Gary B. Swanson, . (2007). Perspective digest. Silver Spring, MD: Epiphany Printing.
MLA
, Gary B. Swanson, . Perspective digest. Silver Spring, MD: Epiphany Printing. 2007.