Henry, J. M. (1975). Free enterprise, an imperative: Nine essays on "The moral imperative of the American private enterprise system of risks and rewards". Herbert Hoover Presidential Library Association for the Garvey Foundation, Wichita, Kansas.
Παραπομπή σε μορφή Chicago (17η εκδ.)Henry, John M. Free Enterprise, an Imperative: Nine Essays on "The Moral Imperative of the American Private Enterprise System of Risks and Rewards". West Branch, Iowa: Herbert Hoover Presidential Library Association for the Garvey Foundation, Wichita, Kansas, 1975.
Παραπομπή σε μορφή MLA (9th εκδ.)Henry, John M. Free Enterprise, an Imperative: Nine Essays on "The Moral Imperative of the American Private Enterprise System of Risks and Rewards". Herbert Hoover Presidential Library Association for the Garvey Foundation, Wichita, Kansas, 1975.