Ajmal, M. (1963). Our knowledge of the external world. Pakistan Philosophical Congress Publication.
Cita Chicago Style (17a ed.)Ajmal, Muhammad. "Our Knowledge of the External World." Pakistan Philosophical Congress Publication 1963.
Cita MLA (8a ed.)Ajmal, Muhammad. "Our Knowledge of the External World." Pakistan Philosophical Congress Publication, 1963.
Precaución: Estas citas no son 100% exactas.