WALKER, R. (2005). Under the microscope the human body volume 4 making life: How we reproduce and grow. Grolier Educational.
Čikaški stil citiranja (17. izdanje)WALKER, Richard. Under the Microscope the Human Body Volume 4 Making Life: How We Reproduce and Grow. Danbury: Grolier Educational, 2005.
MLA način citiranja (9. izdanje)WALKER, Richard. Under the Microscope the Human Body Volume 4 Making Life: How We Reproduce and Grow. Grolier Educational, 2005.
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