Cita APA (7th ed.)
(1970). URBAN America: The expert looks at the city. Voice of American Forum Lectures.
Cita Chicago (17th ed.)
URBAN America: The Expert Looks at the City. Estados Unidos: Voice of American Forum Lectures, 1970.
Cita MLA (9th ed.)
URBAN America: The Expert Looks at the City. Voice of American Forum Lectures, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.