Gaya APA
Neagley, R, L., Evans, N, D. (1980).
Handbook for effective supervision of instruction (3th Ed.).
New Jersey:
Prentice-Hall.
Gaya MLA
Neagley, Ross, L., Evans, N., Dean.
"Handbook for effective supervision of instruction".
3th Ed.
New Jersey:
Prentice-Hall,
1980.
Text.