APA

Departments of Environment and Transport. Information series LIB/INF/29, . (1977). Register of surveys 1977. London: Departments of Environment and Transport. Information series LIB/INF/29.

Chicago

Departments of Environment and Transport. Information series LIB/INF/29, . 1977. Register of surveys 1977. London: Departments of Environment and Transport. Information series LIB/INF/29.

Harvard

Departments of Environment and Transport. Information series LIB/INF/29, . (1977). Register of surveys 1977. London: Departments of Environment and Transport. Information series LIB/INF/29.

MLA

Departments of Environment and Transport. Information series LIB/INF/29, . Register of surveys 1977. London: Departments of Environment and Transport. Information series LIB/INF/29. 1977.