APA引文

Bernard Lovell. (1968). Our present knowledge of the universe. Massachussetts: Harvard Univ.

Trích dẫn kiểu Chicago

Bernard Lovell. Our Present Knowledge of the Universe. Massachussetts: Harvard Univ, 1968.

MLA引文

Bernard Lovell. Our Present Knowledge of the Universe. Massachussetts: Harvard Univ, 1968.

警告：这些引文格式不一定是100％准确.