OSTRANDER SHEILA. (1995). SUPERLEARNING 2000. SOUVENIR PRESS.
Chicago Style aipamenaOSTRANDER SHEILA. SUPERLEARNING 2000. LONDON: SOUVENIR PRESS, 1995.
MLA aipamenaOSTRANDER SHEILA. SUPERLEARNING 2000. SOUVENIR PRESS, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.