Blitghingyon, W. P. (1981). The energy and vitality book. Living Books.
Cita Chicago Style (17a ed.)Blitghingyon, W. Peter. The Energy and Vitality Book. Living Books, 1981.
Cita MLA (9a ed.)Blitghingyon, W. Peter. The Energy and Vitality Book. Living Books, 1981.
Precaución: Estas citas no son 100% exactas.