Criccieth Castle, Caernarvonshire. Official guide

Chicago citation style
O'Neil, B. H. St. J. (Bryan Hugh St. John). Criccieth Castle, Caernarvonshire. Official guide. 1939. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000151097. (Accessed September 18, 2018.)
APA citation style
O'Neil, B. H. St. J. (Bryan Hugh St. John), (1939) Criccieth Castle, Caernarvonshire. Official guide. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000151097
MLA citation style
O'Neil, B. H. St. J. (Bryan Hugh St. John). Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/000151097>.
Note: These citations are programmatically generated and may be incomplete.