SWINDOLL CHARLES R. (1985). THREE STEPS FORWARD TWO STEPS BACK. BANTAM BOOKS.
芝加哥风格引文SWINDOLL CHARLES R. THREE STEPS FORWARD TWO STEPS BACK. NEW YORK: BANTAM BOOKS, 1985.
MLA引文SWINDOLL CHARLES R. THREE STEPS FORWARD TWO STEPS BACK. BANTAM BOOKS, 1985.
警告：这些引文格式不一定是100％准确.