Gaya APA
Certo, Samuel C.. (1997).
Supervision, Second Edition (2 nd ed.).
USA:
Irwin.
Gaya Chicago
Certo, Samuel C..
Supervision, Second Edition.
2 nd ed.
USA:
Irwin,
1997.
.
Gaya MLA
Certo, Samuel C..
Supervision, Second Edition.
2 nd ed.
USA:
Irwin,
1997.
.
Gaya Turabian
Certo, Samuel C..
Supervision, Second Edition.
2 nd ed.
USA:
Irwin,
1997.
.