Παραπομπή APA

Nelkon, M., & Ogborn, J. M. (1977). Advanced level practical physics.

Παραπομπή Chicago Style

Nelkon, M., και J M. Ogborn. Advanced Level Practical Physics. Singapore, English language book society, 1977.

Παραπομπή MLA

Nelkon, M., και J M. Ogborn. Advanced Level Practical Physics. 1977.