एपीए उद्धरण

Hilpinen, R. (1981). Deontic logic: Introductory and systematic readings. Reidel ; Sold and distributed in the U.S.A. and Canada by Kluwer Boston.

शिकागो स्टाइल उद्धरण

Hilpinen, Risto. Deontic Logic: Introductory and Systematic Readings. Dordrecht, Holland ; Boston, U.S.A. : Hingham, MA: Reidel ; Sold and distributed in the U.S.A. and Canada by Kluwer Boston, 1981.

एमएलए उद्धरण

Hilpinen, Risto. Deontic Logic: Introductory and Systematic Readings. Reidel ; Sold and distributed in the U.S.A. and Canada by Kluwer Boston, 1981.