Gaya APA

Delbecq, A, C. et al (1975). Group Techniques fo Program Planning a Guide to Nominal group and dephi Processes . USA: Scott Foresman And Co.

Gaya MLA

Delbecq, Andre, C. et al. "Group Techniques fo Program Planning a Guide to Nominal group and dephi Processes". USA: Scott Foresman And Co, 1975. Text.