Cita APA (7a ed.)

(1966). Conference on Housing Cooperatives: Vienna, 31st August, 1966. [s.n.].

Cita Chicago Style (17a ed.)

Conference on Housing Cooperatives: Vienna, 31st August, 1966. [S.l.]: [s.n.], 1966.

Cita MLA (9a ed.)

Conference on Housing Cooperatives: Vienna, 31st August, 1966. [s.n.], 1966.