Harrop, D. A. (1980). A history of the Gregynog Press. Private Libraries Association.
Tohutoru Chicago (17th ed.)Harrop, Dorothy A. A History of the Gregynog Press. Pinner, Middlesex: Private Libraries Association, 1980.
Tohutoro MLA (8th ed.)Harrop, Dorothy A. A History of the Gregynog Press. Private Libraries Association, 1980.
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