APA Style
Hegner, J, G, E, R, W.
(1981).
Invertebrate Zoology
(
3rd)
.
New York:
Pearson College Div.
MLA Style
Hegner, Joseph, G., Engemann;, Robert, W..
"Invertebrate Zoology".
3rd
New York:
Pearson College Div,
1981.
BOOK.