Statistik för beteendevetare Borg Elisabet, Westerlund Joakim 2., uppdaterade uppl. : Stockholm : Liber : 2007 : 456 s. : ISBN: 978-91-47-01510-8 Search the University Library catalogue
Research methods : a process of inquiry Graziano Anthony M., Raulin Michael L 6th ed. : Boston : Pearson Allyn and Bacon : c2007 : xxxi, 447 s. : ISBN: 0-205-48475-1 Search the University Library catalogue