Watkinson, J. (2004). Art of the helicopter. Elsevier Butterworth-Heinemann.
芝加哥风格引文Watkinson, John. Art of the Helicopter. Oxford ; Burlington, MA: Elsevier Butterworth-Heinemann, 2004.
MLA引文Watkinson, John. Art of the Helicopter. Elsevier Butterworth-Heinemann, 2004.
警告：这些引文格式不一定是100％准确.