Perez, A. E. (1976). The migration factor in planning exercises. s.n.].
Chicago Style (17th ed.) CitationPerez, Aurora E. The Migration Factor in Planning Exercises. [S.l: s.n.], 1976.
ציטוט MLAPerez, Aurora E. The Migration Factor in Planning Exercises. s.n.], 1976.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.