Keck, W. C. (1968). Peace Corps Tuberculosis control - Program in the yungas Area of Bolivia. s.n.
Cita Chicago (17th ed.)Keck, William C. Peace Corps Tuberculosis Control - Program in the Yungas Area of Bolivia. La Paz: s.n, 1968.
Cita MLA (9th ed.)Keck, William C. Peace Corps Tuberculosis Control - Program in the Yungas Area of Bolivia. s.n, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.