Gaya APA
Leather, S, R., Walvoord, B, E, F. (1998).
Effective Grading : A Tool For Learning And Assessment .
San Fransisco:
Jossey-Bass.
Gaya MLA
Leather, S., R.., Walvoord, Barbara, E., Fassler.
"Effective Grading : A Tool For Learning And Assessment".
San Fransisco:
Jossey-Bass,
1998.
Text.