Gaya APA
Nature, science annual. (1970).
New York:
Time-Life Books.
Gaya Chicago
Nature, science annual.
-.
New York:
Time-Life Books,
1970.
Buku.
Gaya MLA
Nature, science annual.
-.
New York:
Time-Life Books,
1970.
Buku.
Gaya Turabian
Nature, science annual.
New York:
Time-Life Books,
1970.
Buku.