APA aipamena

HARRISON. E. R. (2013). FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS-VI. FRANK BROS & CO.

Chicago Style aipamena

HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS-VI. FRANK BROS & CO, 2013.

MLA aipamena

HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS-VI. FRANK BROS & CO, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.