Sorenson, R. (1951). The art of board membership. Association Press.
Cita Chicago (17th ed.)Sorenson, Roy. The Art of Board Membership. Association Press, 1951.
Cita MLA (9th ed.)Sorenson, Roy. The Art of Board Membership. Association Press, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.