Παραπομπή APA

Krup, R. S. (1989). Oudyogika sthitivivarangal: Official statistics. State institute of languages.

Παραπομπή Chicago Style

Krup, R S. Oudyogika Sthitivivarangal: Official Statistics. Thiruvananthapuram: State institute of languages, 1989.

Παραπομπή MLA

Krup, R S. Oudyogika Sthitivivarangal: Official Statistics. State institute of languages, 1989.