McElroy, W. (1992). Roof builder's handbook. Prentice Hall.
芝加哥风格引文McElroy, William. Roof Builder's Handbook. Englewood Cliffs, New Jersey: Prentice Hall, 1992.
MLA引文McElroy, William. Roof Builder's Handbook. Prentice Hall, 1992.
警告：这些引文格式不一定是100％准确.