Bruce, H. A. (1918). Nerve cotrol and how to gain it. Funk and Wagnallas.
Cita Chicago Style (17a ed.)Bruce, H Addington. Nerve Cotrol and How to Gain It. New York: Funk and Wagnallas, 1918.
Cita MLA (9a ed.)Bruce, H Addington. Nerve Cotrol and How to Gain It. Funk and Wagnallas, 1918.
Precaución: Estas citas no son 100% exactas.