Cita APA (7a ed.)

Guba, E. G., & Lincoln , Y. S. (1989). Fourth generation evaluation. SAGE Publications.

Cita Chicago Style (17a ed.)

Guba, Egon G., y Yvonna S. Lincoln. Fourth Generation Evaluation. California: SAGE Publications, 1989.

Cita MLA (9a ed.)

Guba, Egon G., y Yvonna S. Lincoln. Fourth Generation Evaluation. SAGE Publications, 1989.