APA Style
Asimovs, Isaac. (1989).
Ancient Astronomy .
:
Gareth Steven Publishing.
Chicago Style
Asimovs, Isaac.
Ancient Astronomy.
:
Gareth Steven Publishing,
1989.
Text.
MLA Style
Asimovs, Isaac.
Ancient Astronomy.
:
Gareth Steven Publishing,
1989.
Text.
Turabian Style
Asimovs, Isaac.
Ancient Astronomy.
:
Gareth Steven Publishing,
1989.
Print.