Liban, P. (1964). Classroom observation: Its use by public school division supervisors in Cagayan. s.n.].
Chicago-Zitierstil (17. Ausg.)Liban, Pura. Classroom Observation: Its Use by Public School Division Supervisors in Cagayan. [Quezon City: s.n.], 1964.
MLA-Zitierstil (9. Ausg.)Liban, Pura. Classroom Observation: Its Use by Public School Division Supervisors in Cagayan. s.n.], 1964.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.