Παραπομπή APA

(1960). City Planning Commission: Philadelphia comprehensive plan : the physical development plan for the city of Philadelphia. Philadelphia: [s.n.].

Παραπομπή Chicago Style

City Planning Commission: Philadelphia Comprehensive Plan : The Physical Development Plan for the City of Philadelphia. Philadelphia: [s.n.], 1960.

Παραπομπή MLA

City Planning Commission: Philadelphia Comprehensive Plan : The Physical Development Plan for the City of Philadelphia. Philadelphia: [s.n.], 1960.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.