APA (7th ed.) Citation

International Hydrological Programme, Unesco, & McPherson, M. (1977). Research on urban hydrology: Volume 1. Unesco.

Chicago Style (17th ed.) Citation

International Hydrological Programme, Unesco, and M.B McPherson. Research on Urban Hydrology: Volume 1. Paris: Unesco, 1977.

MLA (9th ed.) Citation

International Hydrological Programme, et al. Research on Urban Hydrology: Volume 1. Unesco, 1977.