Cita APA

UNESCO, Grigoriev, V. J., & Whetslone, G. W. (1972). Hydrologic information systems. Paris: UNESCO.

Citación estilo Chicago

UNESCO, V. J. Grigoriev, y G. W. Whetslone. Hydrologic Information Systems. Paris: UNESCO, 1972.

Cita MLA

UNESCO, V. J. Grigoriev, y G. W. Whetslone. Hydrologic Information Systems. Paris: UNESCO, 1972.