Hopp, V., & Hennig, I. (1983). Handbook of applied chemistry: : facts for engineers, scientists, technicians, and technical managers. Hemisphere Pub. Corp..
शिकागो स्टाइल उद्धरणHopp, Vollrath, और Ingo Hennig. Handbook of Applied Chemistry: : Facts for Engineers, Scientists, Technicians, and Technical Managers. Washington: Hemisphere Pub. Corp., 1983.
एमएलए उद्धरणHopp, Vollrath, और Ingo Hennig. Handbook of Applied Chemistry: : Facts for Engineers, Scientists, Technicians, and Technical Managers. Hemisphere Pub. Corp., 1983.
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