Liebman, J. L. (1966). Hope for man: An optimistic philosophy and guide to self-fulfillment. Surrey World's Work.
Cita Chicago Style (17a ed.)Liebman, Joshua Loth. Hope for Man: An Optimistic Philosophy and Guide to Self-fulfillment. Kingswood: Surrey World's Work, 1966.
Cita MLA (9a ed.)Liebman, Joshua Loth. Hope for Man: An Optimistic Philosophy and Guide to Self-fulfillment. Surrey World's Work, 1966.
Precaución: Estas citas no son 100% exactas.