APA aipamena

HARRISON. E. R. (2014). FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS- VII. FRANK BROS & CO.

Chicago Style aipamena

HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS- VII. FRANK BROS & CO, 2014.

MLA aipamena

HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS- VII. FRANK BROS & CO, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.