APA (7th ed.) Citation

Clarke, D. T. D. (1970). Colchester castle: A history, description and guide (2. ed.). Colchester Corp.

Chicago Style (17th ed.) Citation

Clarke, David T. D. Colchester Castle: A History, Description and Guide. 2. ed. Colchester: Colchester Corp, 1970.

MLA (9th ed.) Citation

Clarke, David T. D. Colchester Castle: A History, Description and Guide. 2. ed. Colchester Corp, 1970.