APA (7e ed.) Bronvermelding

(1980). The unit plan: A plan for curriculum organizing and teaching / by Earl J. Ogletree, Patricia Gebauer, Vilma E. Ujlaki.

Chicago (17e ed.) Bronvermelding

The Unit Plan: A Plan for Curriculum Organizing and Teaching / by Earl J. Ogletree, Patricia Gebauer, Vilma E. Ujlaki. 1980.

MLA (9e ed.) Bronvermelding

The Unit Plan: A Plan for Curriculum Organizing and Teaching / by Earl J. Ogletree, Patricia Gebauer, Vilma E. Ujlaki. 1980.