Gaya APA
RIBES, Bruno. (1978).
Biology and ethics .
Paris:
Unesco.
Gaya Chicago
RIBES, Bruno.
Biology and ethics.
Paris:
Unesco,
1978.
Text.
Gaya MLA
RIBES, Bruno.
Biology and ethics.
Paris:
Unesco,
1978.
Text.
Gaya Turabian
RIBES, Bruno.
Biology and ethics.
Paris:
Unesco,
1978.
Print.