Gaya APA
Zeilik, Michael. (1979).
Astronomy: the evolving universe .
New York:
Harper & Row.
Gaya Chicago
Zeilik, Michael.
Astronomy: the evolving universe.
New York:
Harper & Row,
1979.
Tesis.
Gaya MLA
Zeilik, Michael.
Astronomy: the evolving universe.
New York:
Harper & Row,
1979.
Tesis.
Gaya Turabian
Zeilik, Michael.
Astronomy: the evolving universe.
New York:
Harper & Row,
1979.
Tesis.