Gaya APA

Understanding Spreads. (2007). [s.l.]: [s.n.].

Gaya Chicago

Understanding Spreads. . [s.l.]: [s.n.], 2007. Text.

Gaya MLA

Understanding Spreads. . [s.l.]: [s.n.], 2007. Text.

Gaya Turabian

Understanding Spreads. [s.l.]: [s.n.], 2007. Print.