APA引文

Machholz, D. (2013). The observing guide to the Messier marathon: Ahandbook and atlas. Cambridge University.

Trích dẫn kiểu Chicago

Machholz, Don. The Observing Guide to the Messier Marathon: Ahandbook and Atlas. Cambridge University, 2013.

MLA引文

Machholz, Don. The Observing Guide to the Messier Marathon: Ahandbook and Atlas. Cambridge University, 2013.

警告：这些引文格式不一定是100％准确.