Charles. (2007). The elements of organic gardening: Highgrove, Clarence House, Birkhall. [Carlsbad, Calif.]: Kales Press.
शिकागो स्टाइल उद्धरणCharles. The Elements of Organic Gardening: Highgrove, Clarence House, Birkhall. [Carlsbad, Calif.]: Kales Press, 2007.
एमएलए उद्धरणCharles. The Elements of Organic Gardening: Highgrove, Clarence House, Birkhall. [Carlsbad, Calif.]: Kales Press, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.