Guth, H. P. (1969). Essay (Second edition.). Belmont, California: Wadsworth Publishing Company.
Trích dẫn kiểu ChicagoGuth, Hans P. Essay. Second edition. Belmont, California: Wadsworth Publishing Company, 1969.
MLA引文Guth, Hans P. Essay. Second edition. Belmont, California: Wadsworth Publishing Company, 1969.
警告：這些引文格式不一定是100％准確.