APA (7th ed.) Citation

125333 TRAIN, R., 18572 UICN, M., & 32368 2. Conferencia Mundial sobre Parques Nacionales Yellowstone, G. T. 1. -. 2. S. 1. (1974). An idea whose time has come: The world heritage trust, a world need and a world opportunity. Morges (Suiza).

Chicago Style (17th ed.) Citation

125333 TRAIN, R.E., Morges 18572 UICN, and Grand Teton 18 - 27 Set 1972 32368 2. Conferencia Mundial sobre Parques Nacionales Yellowstone. An Idea Whose Time Has Come: The World Heritage Trust, a World Need and a World Opportunity. Morges (Suiza), 1974.

MLA (8th ed.) Citation

125333 TRAIN, R.E., et al. An Idea Whose Time Has Come: The World Heritage Trust, a World Need and a World Opportunity. Morges (Suiza), 1974.

IICA/CATIE Citation

125333 TRAIN, R., 18572 UICN, M., ; 32368 2. Conferencia Mundial sobre Parques Nacionales Yellowstone, G. T. 1. -. 2. S. 1. 1974. An idea whose time has come: The world heritage trust, a world need and a world opportunity. Morges (Suiza).