Avery, R. (1996). ATPL training texts: Airspeed, altimetry, equi-time points/PNR's : a self study course. Avfacts ATPL Training.
芝加哥风格引文Avery, Rob. ATPL Training Texts: Airspeed, Altimetry, Equi-time Points/PNR's : A Self Study Course. Bassendean, W.A.: Avfacts ATPL Training, 1996.
MLA引文Avery, Rob. ATPL Training Texts: Airspeed, Altimetry, Equi-time Points/PNR's : A Self Study Course. Avfacts ATPL Training, 1996.
警告：这些引文格式不一定是100％准确.