Yarsley Research Laboratories. (1977). Plastics in gears. The Laboratories.
Chicago Style aipamenaYarsley Research Laboratories. Plastics in Gears. [Ashtead]: The Laboratories, 1977.
MLA aipamenaYarsley Research Laboratories. Plastics in Gears. The Laboratories, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.