Gaya APA
RIDLEY, MARK. (1987).
The Essential Darwin .
London:
Unwin Paperbacks.
Gaya Chicago
RIDLEY, MARK.
The Essential Darwin.
London:
Unwin Paperbacks,
1987.
Buku.
Gaya MLA
RIDLEY, MARK.
The Essential Darwin.
London:
Unwin Paperbacks,
1987.
Buku.
Gaya Turabian
RIDLEY, MARK.
The Essential Darwin.
London:
Unwin Paperbacks,
1987.
Buku.