Nainggolan, Werlin S., author
Armico, 1987
Buku Teks
Mark, Melvin, author
Allyn and Bacon, 1979
Buku Teks
Choudhury, T. Roy, author
Tata McGraw-Hill, 1973
Buku Teks
Zemansky, Mark W. (Mark Waldo), 1900-, author
McGraw-Hill, 1957
Buku Teks
Balzhiser, Richard E., author
Prentice Hall of India, 1977
Buku Teks