APA
British Ports Association, . (1981). Hydrographic surveying in small ports: guidance notes. London: British Ports Association.
Chicago
British Ports Association, . 1981. Hydrographic surveying in small ports: guidance notes. London: British Ports Association.
Harvard
British Ports Association, . (1981). Hydrographic surveying in small ports: guidance notes. London: British Ports Association.
MLA
British Ports Association, . Hydrographic surveying in small ports: guidance notes. London: British Ports Association. 1981.
