Παραπομπή APA

Longstaff, A. (2013). Astrobiology: :an introduction. CRC press.

Παραπομπή Chicago Style

Longstaff, Alan. Astrobiology: :an Introduction. Boca Raton: CRC press, 2013.

Παραπομπή MLA

Longstaff, Alan. Astrobiology: :an Introduction. CRC press, 2013.