APA aipamena

(1976). Work: D[101] block [5][(16 & 17)]. Open University Press.

Chicago Style aipamena

Work: D[101] Block [5][(16 & 17)]. Open University Press, 1976.

MLA aipamena

Work: D[101] Block [5][(16 & 17)]. Open University Press, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.