एपीए उद्धरण

James Varghese. (1986). On essential oils. Synthetic.

शिकागो स्टाइल उद्धरण

James Varghese. On Essential Oils. Kolencherry, Ernakulam: Synthetic, 1986.

एमएलए उद्धरण

James Varghese. On Essential Oils. Synthetic, 1986.