APA Style
CURTIS, HELENA, N, SUE BARNES. (1989).
Biology (5).
United States:
Worth Publishers.
Chicago Style
CURTIS, HELENA, N, SUE BARNES.
Biology.
5
United States:
Worth Publishers,
1989.
REF.
MLA Style
CURTIS, HELENA, N, SUE BARNES.
Biology.
5
United States:
Worth Publishers,
1989.
REF.
Turabian Style
CURTIS, HELENA, N, SUE BARNES.
Biology.
5
United States:
Worth Publishers,
1989.
REF.