Gaya APA
WALKER, R. (2005).
UNDER THE MICROSCOPE MAKING LIFE HOW WE REPRODUCE AND GROW VOLUME 4 .
CAMBRIGE, UK:
GROLIER DANBURY,CONNECTICUT.
Gaya MLA
WALKER, RICARD.
"UNDER THE MICROSCOPE MAKING LIFE HOW WE REPRODUCE AND GROW VOLUME 4".
CAMBRIGE, UK:
GROLIER DANBURY,CONNECTICUT,
2005.
Text.