Παραπομπή APA

Nelkon, M., & Ogborn, J. (1970). Advanced level practical physics (3rd ed.). ELBS.

Παραπομπή Chicago Style

Nelkon, M., και J.M Ogborn. Advanced Level Practical Physics. 3rd ed. London: ELBS, 1970.

Παραπομπή MLA

Nelkon, M., και J.M Ogborn. Advanced Level Practical Physics. 3rd ed. ELBS, 1970.