Παραπομπή APA

D'Sousa, S. (1974). Closed Birth Intervals: A Data Analysis Study. Sterling Publishers (P) Ltd.

Παραπομπή Chicago Style

D'Sousa, Stanislaus. Closed Birth Intervals: A Data Analysis Study. New Delhi: Sterling Publishers (P) Ltd, 1974.

Παραπομπή MLA

D'Sousa, Stanislaus. Closed Birth Intervals: A Data Analysis Study. Sterling Publishers (P) Ltd, 1974.