Mitchell, W. B. (1969). Area handbook for Guyana. U.S. Government Printing Office.
Chicago Style aipamenaMitchell, William B. Area Handbook for Guyana. Washington, D.C: U.S. Government Printing Office, 1969.
MLA aipamenaMitchell, William B. Area Handbook for Guyana. U.S. Government Printing Office, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.