Gaya APA
Pasachoff, Jay M.. (1985).
Contemporary Astronomy (3rd.ed.).
USA:
CBS College Publishing.
Gaya Chicago
Pasachoff, Jay M..
Contemporary Astronomy.
3rd.ed.
USA:
CBS College Publishing,
1985.
Text.
Gaya MLA
Pasachoff, Jay M..
Contemporary Astronomy.
3rd.ed.
USA:
CBS College Publishing,
1985.
Text.
Gaya Turabian
Pasachoff, Jay M..
Contemporary Astronomy.
3rd.ed.
USA:
CBS College Publishing,
1985.
Print.