Ford, L.R.
Flows in networks
Princeton University Press, 1962
 Buku Teks SO
L`Amour, Louis
The key-lock man
Bantam Book, 1965
 Buku Teks SO
Egan, William F.
Frequency synthesis/ Phase Lock
John Wiley & Sons, 1981
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Egan, William F.
Phase-lock basics
John Wiley & Sons, 1998
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Kihara, Taro
Intermolecular forces
John Wiley & Sons, 1978
 Buku Teks SO