Englert, P. D. (1991). Folder 55: Englert, P.A.J., J.F. Dempsey, W. Gaugler, W. Venuti, T.A. Cahill, and T.E. Gill. Geochemical Analysis Supporting Search for Ancient Monuments, 1991. Saint Louis University Libraries Digitization Center.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিEnglert, P.A.; Dempsey. Folder 55: Englert, P.A.J., J.F. Dempsey, W. Gaugler, W. Venuti, T.A. Cahill, and T.E. Gill. Geochemical Analysis Supporting Search for Ancient Monuments, 1991. Saint Louis University Libraries Digitization Center, 1991.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিEnglert, P.A.; Dempsey. Folder 55: Englert, P.A.J., J.F. Dempsey, W. Gaugler, W. Venuti, T.A. Cahill, and T.E. Gill. Geochemical Analysis Supporting Search for Ancient Monuments, 1991. Saint Louis University Libraries Digitization Center, 1991.