Hutchings, D. W. (1969). Edison at work: the Thomas A. Edison laboratory: At West Orange, New Jersey. Hastings.
Cita Chicago Style (17a ed.)Hutchings, David W. Edison at Work: The Thomas A. Edison Laboratory: At West Orange, New Jersey. New York: Hastings, 1969.
Cita MLA (9a ed.)Hutchings, David W. Edison at Work: The Thomas A. Edison Laboratory: At West Orange, New Jersey. Hastings, 1969.
Precaución: Estas citas no son 100% exactas.