Biegańska, Anna. The learned Scots in Poland from the mid-sixteenth to the close of the eighteenth century, "Canadian Slavonic Papers", March 2001, online version[permanent dead link]
One or more of the preceding sentences incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Robert Abercromby". Catholic Encyclopedia. New York: Robert Appleton Company.