Παραπομπή APA

Kumbal,, D. S. (1992). Encyclopaedia of popular science: Vol.4. Akash Deep.

Παραπομπή Chicago Style

Kumbal,, Dexter S. Encyclopaedia of Popular Science: Vol.4. Delhi: Akash Deep, 1992.

Παραπομπή MLA

Kumbal,, Dexter S. Encyclopaedia of Popular Science: Vol.4. Akash Deep, 1992.