Παραπομπή APA

Vyas, J. N. (1982). Planning and industrial unit. N.K.Vyas family trust.

Παραπομπή Chicago Style

Vyas, Jay Narayan. Planning and Industrial Unit. Ahmedabad: N.K.Vyas family trust, 1982.

Παραπομπή MLA

Vyas, Jay Narayan. Planning and Industrial Unit. N.K.Vyas family trust, 1982.