APA ציטוט

Perez, A. E. (1976). The migration factor in planning exercises. s.n.].

Chicago Style (17th ed.) Citation

Perez, Aurora E. The Migration Factor in Planning Exercises. [S.l: s.n.], 1976.

ציטוט MLA

Perez, Aurora E. The Migration Factor in Planning Exercises. s.n.], 1976.