Cita APA (7a ed.)

Laer, P. H. v., & Koren, H. J. (1953). Philosophico-scientific problems. Duquesne University.

Cita Chicago Style (17a ed.)

Laer, P. H. van, y Henry J. Koren. Philosophico-scientific Problems. Pittsburgh: Duquesne University, 1953.

Cita MLA (9a ed.)

Laer, P. H. van, y Henry J. Koren. Philosophico-scientific Problems. Duquesne University, 1953.