Gaya APA
Ravensburg, Maier Verlag. (1999).
Melacak Alam .
:
Angkasa.
Gaya Chicago
Ravensburg, Maier Verlag.
Melacak Alam.
:
Angkasa,
1999.
Non-fiction.
Gaya MLA
Ravensburg, Maier Verlag.
Melacak Alam.
:
Angkasa,
1999.
Non-fiction.
Gaya Turabian
Ravensburg, Maier Verlag.
Melacak Alam.
:
Angkasa,
1999.
Non-fiction.