Gaya APA
HARTMAN, Harold. (1960).
Learn Biology the easy way .
Cambridge:
Greystone Press.
Gaya Chicago
HARTMAN, Harold.
Learn Biology the easy way.
Cambridge:
Greystone Press,
1960.
.
Gaya MLA
HARTMAN, Harold.
Learn Biology the easy way.
Cambridge:
Greystone Press,
1960.
.
Gaya Turabian
HARTMAN, Harold.
Learn Biology the easy way.
Cambridge:
Greystone Press,
1960.
.