APA

Leyden W. v., . (1968). Seventeenth-century metaphysics: an examination of some main concepts and theories. New York: Barnes & Noble.

Chicago

Leyden W von, . 1968. Seventeenth-century metaphysics: an examination of some main concepts and theories. New York: Barnes & Noble.

Harvard

Leyden W. v., . (1968). Seventeenth-century metaphysics: an examination of some main concepts and theories. New York: Barnes & Noble.

MLA

Leyden W von, . Seventeenth-century metaphysics: an examination of some main concepts and theories. New York: Barnes & Noble. 1968.