Cita APA (7a ed.)

Hegel, G. W. F., & Petry, M. J. (1970). Hegel's philosophy of nature. George Allen und Unwin ; Humanities.

Cita Chicago Style (17a ed.)

Hegel, Georg Wilhelm Friedrich, y Michael John Petry. Hegel's Philosophy of Nature. London : New York: George Allen und Unwin ; Humanities, 1970.

Cita MLA (9a ed.)

Hegel, Georg Wilhelm Friedrich, y Michael John Petry. Hegel's Philosophy of Nature. George Allen und Unwin ; Humanities, 1970.