Cita APA (7a ed.)

De Wulf, K. (2005). The role of pleasure in web site success. [s.n.].

Cita Chicago Style (17a ed.)

De Wulf, Kristof. The Role of Pleasure in Web Site Success. [S.l.]: [s.n.], 2005.

Cita MLA (9a ed.)

De Wulf, Kristof. The Role of Pleasure in Web Site Success. [s.n.], 2005.