Gaya APA
Walker, R. (1998).
UNDER THE MICROSCOPE MAKING LIFE HOW WE REPRODUCE AND GROW 4 .
Connecticut:
Grolier Educational.
Gaya MLA
Walker, Richard.
"UNDER THE MICROSCOPE MAKING LIFE HOW WE REPRODUCE AND GROW 4".
Connecticut:
Grolier Educational,
1998.
Text.