Gaya APA
Asimov, Isaac. (1960).
The Wellsprings Of Life .
New York:
The New American Library.
Gaya Chicago
Asimov, Isaac.
The Wellsprings Of Life.
New York:
The New American Library,
1960.
Text.
Gaya MLA
Asimov, Isaac.
The Wellsprings Of Life.
New York:
The New American Library,
1960.
Text.
Gaya Turabian
Asimov, Isaac.
The Wellsprings Of Life.
New York:
The New American Library,
1960.
Print.