Keefer, L. E. (1966). Urban travel patterns for airports, shopping centers, and industrial plants. Highway Research Board, Division of Engineering, National Research Council, National Academy of Science.
Citación estilo ChicagoKeefer, Louis E. Urban Travel Patterns for Airports, Shopping Centers, and Industrial Plants. Washington: Highway Research Board, Division of Engineering, National Research Council, National Academy of Science, 1966.
Cita MLAKeefer, Louis E. Urban Travel Patterns for Airports, Shopping Centers, and Industrial Plants. Highway Research Board, Division of Engineering, National Research Council, National Academy of Science, 1966.
Warning: These citations may not always be 100% accurate.