Gaya APA

Stufflebeam, D, S., Shinkfield, A, J. (1985). Systematic evaluation : a self instructional guide to theory and practice . Boston: Kluwer-Nijhoff.

Gaya MLA

Stufflebeam, Daniel, S.., Shinkfield, Anthony, J.. "Systematic evaluation : a self instructional guide to theory and practice". Boston: Kluwer-Nijhoff, 1985. Text.