APA (7th ed.) Citation

Society of the Plastics Industry. (1978). Membership directory & buyers' guide. Society of the Plastics Industry.

Chicago Style (17th ed.) Citation

Society of the Plastics Industry. Membership Directory & Buyers' Guide. New York: Society of the Plastics Industry, 1978.

MLA (9th ed.) Citation

Society of the Plastics Industry. Membership Directory & Buyers' Guide. Society of the Plastics Industry, 1978.

Warning: These citations may not always be 100% accurate.