APA Style
Ardley, Neil, Ridpath, Ian, Harben, Peter. (1978).
Alam semesta dan bumi .
Jakarta:
Gramedia Pustaka Utama.
Chicago Style
Ardley, Neil, Ridpath, Ian, Harben, Peter.
Alam semesta dan bumi.
Jakarta:
Gramedia Pustaka Utama,
1978.
Referensi.
MLA Style
Ardley, Neil, Ridpath, Ian, Harben, Peter.
Alam semesta dan bumi.
Jakarta:
Gramedia Pustaka Utama,
1978.
Referensi.
Turabian Style
Ardley, Neil, Ridpath, Ian, Harben, Peter.
Alam semesta dan bumi.
Jakarta:
Gramedia Pustaka Utama,
1978.
Referensi.