Παραπομπή APA

Santosh Aggarwal. (1991). Three language formula: An educational problem. Jnan.

Παραπομπή Chicago Style

Santosh Aggarwal. Three Language Formula: An Educational Problem. New Delhi: Jnan, 1991.

Παραπομπή MLA

Santosh Aggarwal. Three Language Formula: An Educational Problem. Jnan, 1991.