APA Style

GUBA, Egon G., Lincoln, Ivonna S.. (1989). Fourth generation evaluation . London: Sage.

Chicago Style

GUBA, Egon G., Lincoln, Ivonna S.. Fourth generation evaluation. London: Sage, 1989. Text.

MLA Style

GUBA, Egon G., Lincoln, Ivonna S.. Fourth generation evaluation. London: Sage, 1989. Text.

Turabian Style

GUBA, Egon G., Lincoln, Ivonna S.. Fourth generation evaluation. London: Sage, 1989. Print.