APA引文

Colombo, U., & Turani, G. (1986). Der zweite Planet. Information series / Club of Rome.

芝加哥风格引文

Colombo, Umberto, 与 Giuseppe Turani. "Der Zweite Planet." Information Series / Club of Rome 1986.

MLA引文

Colombo, Umberto, 与 Giuseppe Turani. "Der Zweite Planet." Information Series / Club of Rome, 1986.

警告:这些引文格式不一定是100%准确.