APA-referens (7:e uppl.)

Harrop, D. A. (1980). A history of the Gregynog Press. Private Libraries Association.

Chicago-referens (17:e uppl.)

Harrop, Dorothy A. A History of the Gregynog Press. Pinner, Middlesex: Private Libraries Association, 1980.

MLA-referens (9:e uppl.)

Harrop, Dorothy A. A History of the Gregynog Press. Private Libraries Association, 1980.