Leatherman's workbook: A supplement to the basic text. Private Edition.
Chicago-Zitierstil (17. Ausg.)Leatherman's Workbook: A Supplement to the Basic Text. USA: Private Edition.
MLA-Zitierstil (8. Ausg.)Leatherman's Workbook: A Supplement to the Basic Text. Private Edition.
警告：这些引文格式不一定是100％准确.