Gaya APA

Sergiovanni, T, J., Starratt, R, J. (2002). Supervision : a redefinition seventh edition (seventh edition). New York: McGraw-Hill Co. Inc..

Gaya MLA

Sergiovanni, Thomas, J.., Starratt, Robert, J.. "Supervision : a redefinition seventh edition". seventh edition New York: McGraw-Hill Co. Inc., 2002. MP.