(1973). PHYSICAL SCIENCE. v1. Introduction and guide. V2. Teachers guide ii. Penguin.
Čikaški stil citiranjaPHYSICAL SCIENCE. V1. Introduction and Guide. V2. Teachers Guide Ii. England: Penguin, 1973.
MLA način citiranjaPHYSICAL SCIENCE. V1. Introduction and Guide. V2. Teachers Guide Ii. Penguin, 1973.
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