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: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/2164