L. Bertalan, R. Inzsöl, J. Hegedüs, in F. . Jankó, „Quo vadis Farmer Sales? The Experience of a Survey in Hungary“, OE, let. 65, št. 1, str. 30–39, jan. 2019, Pridobljeno: 24. november 2025. [Na spletu]. Dostopno na: https://old.journals.um.si/index.php/oe/article/view/2164