Cita APA (7a ed.)

Laer, P. H. v., & Koren, H. J. (1956). Philosophy of science. Duquesne University.

Cita Chicago Style (17a ed.)

Laer, P. H. van, y Henry J. Koren. Philosophy of Science. Pittsburgh: Duquesne University, 1956.

Cita MLA (9a ed.)

Laer, P. H. van, y Henry J. Koren. Philosophy of Science. Duquesne University, 1956.