Παραπομπή APA

National Productivity Council. (1963). Report no.28 glass industry in Britan and U.S.A. N.P.C.

Παραπομπή Chicago Style

National Productivity Council. Report No.28 Glass Industry in Britan and U.S.A. N.P.C, 1963.

Παραπομπή MLA

National Productivity Council. Report No.28 Glass Industry in Britan and U.S.A. N.P.C, 1963.