APA引文

(1997). Space science: The voice of America forrum lectures. Washington: VOA.

Trích dẫn kiểu Chicago

Space Science: The Voice of America Forrum Lectures. Washington: VOA, 1997.

MLA引文

Space Science: The Voice of America Forrum Lectures. Washington: VOA, 1997.

警告：这些引文格式不一定是100％准确.