Παραπομπή APA

B S I. (1981). UDC 678 Industries based on macromolucular materials, rubber, plastics BS 1000(678) 1981. B S I.

Παραπομπή Chicago Style

B S I. UDC 678 Industries Based on Macromolucular Materials, Rubber, Plastics BS 1000(678) 1981. London: B S I, 1981.

Παραπομπή MLA

B S I. UDC 678 Industries Based on Macromolucular Materials, Rubber, Plastics BS 1000(678) 1981. B S I, 1981.