Cita APA (7a ed.)

Luijpen, W. A. (1965). Phenomenology and metaphysics. Duquesne University Press [etc.].

Cita Chicago Style (17a ed.)

Luijpen, William A. Phenomenology and Metaphysics. Pittsburgh, Pennsylvania [etc.]: Duquesne University Press [etc.], 1965.

Cita MLA (9a ed.)

Luijpen, William A. Phenomenology and Metaphysics. Duquesne University Press [etc.], 1965.