APA Style
Sagan, Carl, Leonard, Jonathan Norton. (s.a).
Planet .
Jakarta:
Tira Pustaka.
Chicago Style
Sagan, Carl, Leonard, Jonathan Norton.
Planet.
Jakarta:
Tira Pustaka,
s.a.
Buku SMP Athalia.
MLA Style
Sagan, Carl, Leonard, Jonathan Norton.
Planet.
Jakarta:
Tira Pustaka,
s.a.
Buku SMP Athalia.
Turabian Style
Sagan, Carl, Leonard, Jonathan Norton.
Planet.
Jakarta:
Tira Pustaka,
s.a.
Buku SMP Athalia.