Gaya APA
DALZELL, F. (2010).
ENGINEERING INVENTION, Frank J. Sprague and the U.S. Electrical Industry .
:
The Mit Press.
Gaya MLA
DALZELL, FREDERICK.
"ENGINEERING INVENTION, Frank J. Sprague and the U.S. Electrical Industry".
:
The Mit Press,
2010.
Text Book Elektro S2.