APA

Vincenzi P., . (1997). The dilemma. London: Orion Books.

Chicago

Vincenzi Penny, . 1997. The dilemma. London: Orion Books.

Harvard

Vincenzi P., . (1997). The dilemma. London: Orion Books.

MLA

Vincenzi Penny, . The dilemma. London: Orion Books. 1997.