APA

Helvenston P. a., Bahn P. G., . (2002). Desperately seeking trance plants : testing the "Three Stages of Trance" model. New York: RJ Communications.

Chicago

Helvenston Patricia a, Bahn Paul G, . 2002. Desperately seeking trance plants : testing the "Three Stages of Trance" model. New York: RJ Communications.

Harvard

Helvenston P. a., Bahn P. G., . (2002). Desperately seeking trance plants : testing the "Three Stages of Trance" model. New York: RJ Communications.

MLA

Helvenston Patricia a, Bahn Paul G, . Desperately seeking trance plants : testing the "Three Stages of Trance" model. New York: RJ Communications. 2002.