Gaya APA
Abell, George O., Morrison, David, Wolff, Sidney C.. (1987).
Exploration of the universe (Fifth edition).
New York:
Saunders College Publishing.
Gaya Chicago
Abell, George O., Morrison, David, Wolff, Sidney C..
Exploration of the universe.
Fifth edition
New York:
Saunders College Publishing,
1987.
Buku Non-ketenaganukliran.
Gaya MLA
Abell, George O., Morrison, David, Wolff, Sidney C..
Exploration of the universe.
Fifth edition
New York:
Saunders College Publishing,
1987.
Buku Non-ketenaganukliran.
Gaya Turabian
Abell, George O., Morrison, David, Wolff, Sidney C..
Exploration of the universe.
Fifth edition
New York:
Saunders College Publishing,
1987.
Buku Non-ketenaganukliran.