Williams, A., & Askland, H. H. (2012). The University of Newcastle: PP9-1288. Office for Learning and Teaching.
Chicago Style (17th ed.) ZitazioaWilliams, Anthony, eta Hedda Haugen Askland. The University of Newcastle: PP9-1288. Office for Learning and Teaching, 2012.
MLA (9th ed.) ZitazioaWilliams, Anthony, eta Hedda Haugen Askland. The University of Newcastle: PP9-1288. Office for Learning and Teaching, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.