"Elements of the rational method in Gervase of Tilbury's cosmology and geography", Leonid S. Chekin, "Centaurus" 28, 1985 : [recenzja]

Studia Źródłoznawcze. Commentationes, Tom 32-33 (1990) s. 263
, Leonid S. Chekin (aut. dzieła rec.)