Preface - By William Moore. Preface to the Nicene and Post-Nicene Fathers of the Christian Church, second series, vol. 5, which appeared in 1893 and was the first translation of any of Gregory of Nyssa's works into English. - http://www.ccel.org/ccel/schaff/npnf205.toc.html
The Gregory of Nyssa Homepage - Biography, texts and introductions, links, and bibliography. - http://www.bhsu.edu/artssciences/asfaculty/dsalomon/nyssa/nfrnyssa.html
Gregory of Nyssa, Saint - Very brief biographical entry in the Columbia Encyclopedia. - http://www.bartleby.com/65/gr/GregoryNy.html