APA (7th ed.) Citation

Butler, A., & Ritchie, J. (2006). Rosslyn revealed: [a library in stone]. O Books.

Chicago Style (17th ed.) Citation

Butler, Alan, and John Ritchie. Rosslyn Revealed: [a Library in Stone]. Winchester, U.K. ; New York, U.S.A.: O Books, 2006.

MLA (9th ed.) Citation

Butler, Alan, and John Ritchie. Rosslyn Revealed: [a Library in Stone]. O Books, 2006.