Hooke, J. M., & Kain, R. J. P. (1982). Historical change in the physical environment: A guide to sources and techniques. Butterworth Scientific.
Lua i Stíl Chicago (17ú heag.)Hooke, J. M., agus R. J. P. Kain. Historical Change in the Physical Environment: A Guide to Sources and Techniques. London: Butterworth Scientific, 1982.
Lua MLA (9ú heag.)Hooke, J. M., agus R. J. P. Kain. Historical Change in the Physical Environment: A Guide to Sources and Techniques. Butterworth Scientific, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.