Gaya APA
Verschuur, Gerrit. (1977).
Starscapes topics in astronomy .
Boston:
Little Brown And Com.
Gaya Chicago
Verschuur, Gerrit.
Starscapes topics in astronomy.
Boston:
Little Brown And Com,
1977.
Text.
Gaya MLA
Verschuur, Gerrit.
Starscapes topics in astronomy.
Boston:
Little Brown And Com,
1977.
Text.
Gaya Turabian
Verschuur, Gerrit.
Starscapes topics in astronomy.
Boston:
Little Brown And Com,
1977.
Print.