Levorsen, A.I.
San Fransisco: W.H. Freeman, 1967
Buku Teks
Link, Peter K.
Oil & Gas Consultants International, 1982
Buku Teks
Selley, Richard C.
Academic Press, 1998
Buku Teks
Beckmann, Heinz
Halsted Press, 1981
Buku Teks
Brenner, Robert L.
International Human Resources Development Corp, 1984
Buku Teks