Cita APA (7a ed.)

Snyder, D. P. (1971). Modal logic and its applications. Van Nostrand Reinhold.

Cita Chicago Style (17a ed.)

Snyder, D. Paul. Modal Logic and Its Applications. New York [etc.]: Van Nostrand Reinhold, 1971.

Cita MLA (9a ed.)

Snyder, D. Paul. Modal Logic and Its Applications. Van Nostrand Reinhold, 1971.