Gaya APA
Raven, P, H., Johnson, G, B.
(1995).
Understanding biology
(
3rd ed)
.
Chicago:
Wm. C. Brown.
Gaya MLA
Raven, Peter, H.., Johnson, George, B..
"Understanding biology".
3rd ed
Chicago:
Wm. C. Brown,
1995.
Text.