Dyfyniad APA

Garland, J. D. (1981). National electrical code: Reference book (3rd ed.). Prentice-Hall.

Dyfyniad Arddull Chicago

Garland, J. D. National Electrical Code: Reference Book. 3rd ed. Englewood Cliffs, N. J: Prentice-Hall, 1981.

Dyfyniad MLA

Garland, J. D. National Electrical Code: Reference Book. 3rd ed. Prentice-Hall, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.