APA aipamena

OPEN UNIVERSITY. S25-COURSE TEAM. ORBITALS.

Chicago Style aipamena

OPEN UNIVERSITY. S25-COURSE TEAM. ORBITALS. 2ND ED. BLETCHLEY, OPEN UNIV. PR., 1973. 55, 56P.

MLA aipamena

OPEN UNIVERSITY. S25-COURSE TEAM. ORBITALS.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.