Stettler, Howard F.
Systems based independent audits
Prentice-Hall, 1974
 Buku Teks
Stettler, Howard F.
Systems based independent audits
Prentice-Hall, 1967
 Buku Teks
Sayle, Allan J.
Management Audits; the assessment of quality management systems
McGraw-Hill, 1981
 Buku Teks
Thumann, Albert
Handbook of energy audits
CRC Press, Taylor & Francis, 2010
 Buku Referensi
Thumann, Albert
Handbook of energy audits
Taylor &​ Francis, 2013
 Buku Teks