Παραπομπή APA

O'Sullivan, A. (2009). Urban economics (7th ed.). McGraw Hill Education.

Παραπομπή Chicago Style

O'Sullivan, Arthur. Urban Economics. 7th ed. Boston: McGraw Hill Education, 2009.

Παραπομπή MLA

O'Sullivan, Arthur. Urban Economics. 7th ed. McGraw Hill Education, 2009.