APA

Glaser B. G., Strauss A. L., . (1999). The discovery of grounded theory. New York: Aldine.

Chicago

Glaser Barney G, Strauss Anselm L, . 1999. The discovery of grounded theory. New York: Aldine.

Harvard

Glaser B. G., Strauss A. L., . (1999). The discovery of grounded theory. New York: Aldine.

MLA

Glaser Barney G, Strauss Anselm L, . The discovery of grounded theory. New York: Aldine. 1999.