APA citiranje

Fix, J. D. (2006). Astronomy: Journey to the cosmic frontier. Boston, MA: McGraw-Hil.

Trích dẫn kiểu Chicago

Fix, John D. Astronomy: Journey to the Cosmic Frontier. Boston, MA: McGraw-Hil, 2006.

MLA citiranje

Fix, John D. Astronomy: Journey to the Cosmic Frontier. Boston, MA: McGraw-Hil, 2006.

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