Gaya APA
Froyen, Len A.. (1984).
Classroom management .
Ohio:
Charles E.Merrill Publishing Company.
Gaya Chicago
Froyen, Len A..
Classroom management.
Ohio:
Charles E.Merrill Publishing Company,
1984.
Text.
Gaya MLA
Froyen, Len A..
Classroom management.
Ohio:
Charles E.Merrill Publishing Company,
1984.
Text.
Gaya Turabian
Froyen, Len A..
Classroom management.
Ohio:
Charles E.Merrill Publishing Company,
1984.
Print.