Gaya APA
Lewis,P.D., . (2004).
British poultry science an International journal,vol.45 no.1 february 2004 .
Singapore:
pustaka pelajar.
Gaya MLA
Lewis,P.D., .
"British poultry science an International journal,vol.45 no.1 february 2004".
Singapore:
pustaka pelajar,
2004.
Text.