Jorge, N. M. d. S. (2014). Philip Sheldrake. The Business of Influence. URI:https://journals.openedition.org/cp.
Lua i Stíl Chicago (17ú heag.)Jorge, Nuno Miguel da Silva. "Philip Sheldrake. The Business of Influence." URI:https://journals.openedition.org/cp 2014.
Lua MLA (8ú heag.)Jorge, Nuno Miguel da Silva. "Philip Sheldrake. The Business of Influence." URI:https://journals.openedition.org/cp, 2014.
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