Gaya APA
Barrett+AD4-, +. (2004).
Peripheral Nerve Blocks and Peri+AC0-Operative Pain relief .
China:
W.B Saunders Company.
Gaya MLA
Barrett+AD4-, +ADw-Jack.
"Peripheral Nerve Blocks and Peri+AC0-Operative Pain relief".
China:
W.B Saunders Company,
2004.
Text.