APA Style
Bullock, J. et al
(2001).
Physiology
(
4th edn.)
.
Philadelphia:
Lippincott WIlliams & Wilkins.
MLA Style
Bullock, John. et al.
"Physiology".
4th edn.
Philadelphia:
Lippincott WIlliams & Wilkins,
2001.
Text.