Azeredo Perdigao, J. d. (1979). Calouste Gulbenkian: Collector. Calouste Gulbenkian Foundation.
Cita Chicago (17th ed.)Azeredo Perdigao, Josè de. Calouste Gulbenkian: Collector. Lisbon: Calouste Gulbenkian Foundation, 1979.
Cita MLA (8th ed.)Azeredo Perdigao, Josè de. Calouste Gulbenkian: Collector. Calouste Gulbenkian Foundation, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.