Spellman, F. R. (2021). Fundamentals of public utilities management (First edition.). CRC Press.
Lua i Stíl Chicago (17ú heag.)Spellman, Frank R. Fundamentals of Public Utilities Management. First edition. Boca Raton, FL: CRC Press, 2021.
Lua MLA (9ú heag.)Spellman, Frank R. Fundamentals of Public Utilities Management. First edition. CRC Press, 2021.