APA aipamena

O'BRIEN, T. FUN FACTS SCIENCE. RUPA BOOKS.

Chicago Style aipamena

O'BRIEN, TERRY. FUN FACTS SCIENCE. FACTS; SCIENCE; INFORMATION: RUPA BOOKS.

MLA aipamena

O'BRIEN, TERRY. FUN FACTS SCIENCE. RUPA BOOKS.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.