Cita APA (7th ed.)

Denzin, N. K. (1989). The research act. Prentice Hall, Inc.

Cita Chicago (17th ed.)

Denzin, Norman K. The Research Act. N.J: Prentice Hall, Inc, 1989.

Cita MLA (9th ed.)

Denzin, Norman K. The Research Act. Prentice Hall, Inc, 1989.