APA (7th ed.) Citation
Robert B. (2013). Duncan Gray. Лань.
Chicago Style (17th ed.) CitationRobert B. Duncan Gray. Санкт-Петербург: Лань, 2013.
MLA (8th ed.) CitationRobert B. Duncan Gray. Лань, 2013.
Warning: These citations may not always be 100% accurate.