Guth, H. P. (1969). Essay (Second edition.). Belmont, California: Wadsworth Publishing Company.
Chicago Style aipamenaGuth, Hans P. Essay. Second edition. Belmont, California: Wadsworth Publishing Company, 1969.
MLA aipamenaGuth, Hans P. Essay. Second edition. Belmont, California: Wadsworth Publishing Company, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.