APA Style
CURTIS, HELENA. (1977).
Invitation to biology (2nd).
New York:
WORTH.
Chicago Style
CURTIS, HELENA.
Invitation to biology.
2nd
New York:
WORTH,
1977.
TXB.
MLA Style
CURTIS, HELENA.
Invitation to biology.
2nd
New York:
WORTH,
1977.
TXB.
Turabian Style
CURTIS, HELENA.
Invitation to biology.
2nd
New York:
WORTH,
1977.
TXB.