Konsalik, H. G., & Coburn, O. (1980). They fell from the sky (1st Futura Publications ed.). Futura.
芝加哥风格引文Konsalik, Heinz G., 与 Oliver Coburn. They Fell from the Sky. 1st Futura Publications ed. London: Futura, 1980.
MLA引文Konsalik, Heinz G., 与 Oliver Coburn. They Fell from the Sky. 1st Futura Publications ed. Futura, 1980.
警告：这些引文格式不一定是100％准确.