APA Style
Ridpath, Ian. (1976).
The encyclopedia of astronomy and space .
Indonesia:
London: everyman\'s Library, 1991.
Chicago Style
Ridpath, Ian.
The encyclopedia of astronomy and space.
Indonesia:
London: everyman\'s Library, 1991,
1976.
Referensi.
MLA Style
Ridpath, Ian.
The encyclopedia of astronomy and space.
Indonesia:
London: everyman\'s Library, 1991,
1976.
Referensi.
Turabian Style
Ridpath, Ian.
The encyclopedia of astronomy and space.
Indonesia:
London: everyman\'s Library, 1991,
1976.
Referensi.