Garland, J. D. (1981). National electrical code: Reference book (3rd ed.). Prentice-Hall.
Chicago-viite (17. p.)Garland, J. D. National Electrical Code: Reference Book. 3rd ed. Englewood Cliffs, N. J: Prentice-Hall, 1981.
MLA-viite (9. p.)Garland, J. D. National Electrical Code: Reference Book. 3rd ed. Prentice-Hall, 1981.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.