Fraser, W.
Macdonald and Jane's, 1978
Buku Teks
Donald H. Hamsher, editor-in-chief
McGraw-Hill, 1967
Buku Referensi
International Engineering Consortium
International Engineering Consortium, 1997
eBooks
Gumhalter, Hans, author
Siemens Aktiengesellschaft, 1985
Buku Teks
Gumhalter, Hans, author
Siemens Aktiengesellschaft, 1986
Buku Teks