THE WORLD BOOK .. (1980). The world book illustrated home medical encyclopedia. World Book-Chilcraft International.
Chicago Style aipamenaTHE WORLD BOOK .. The World Book Illustrated Home Medical Encyclopedia. Chicago: World Book-Chilcraft International, 1980.
MLA aipamenaTHE WORLD BOOK .. The World Book Illustrated Home Medical Encyclopedia. World Book-Chilcraft International, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.