Gaya APA
Freeman, Marcia et.al. (2011).
Rourke's World of Science Encyclopedia Volume 7: Astronomy and Space .
Florida:
Rourke Publishing.
Gaya Chicago
Freeman, Marcia et.al.
Rourke's World of Science Encyclopedia Volume 7: Astronomy and Space.
Florida:
Rourke Publishing,
2011.
Buku Tercetak.
Gaya MLA
Freeman, Marcia et.al.
Rourke's World of Science Encyclopedia Volume 7: Astronomy and Space.
Florida:
Rourke Publishing,
2011.
Buku Tercetak.
Gaya Turabian
Freeman, Marcia et.al.
Rourke's World of Science Encyclopedia Volume 7: Astronomy and Space.
Florida:
Rourke Publishing,
2011.
Buku Tercetak.