Gaya APA

Fix, John D.. (2004). Astronomy (Ed. 5). America: Mcgraw Hill, Inc.

Gaya Chicago

Fix, John D.. Astronomy. Ed. 5 America: Mcgraw Hill, Inc, 2004. Text.

Gaya MLA

Fix, John D.. Astronomy. Ed. 5 America: Mcgraw Hill, Inc, 2004. Text.

Gaya Turabian

Fix, John D.. Astronomy. Ed. 5 America: Mcgraw Hill, Inc, 2004. Print.