WHITTED, G. W. (1965). New horizons: World guide. Pan American world Airways.
芝加哥风格引文WHITTED, Gerald W. New Horizons: World Guide. New York: Pan American world Airways, 1965.
MLA引文WHITTED, Gerald W. New Horizons: World Guide. Pan American world Airways, 1965.
警告：这些引文格式不一定是100％准确.