APA استشهاد

Lal & Goswami, P. K. Upkar's objective arithmetic. Upkar Prakashan.

استشهاد بنمط شيكاغو

Lal و P K. Goswami. Upkar's Objective Arithmetic. Agra: Upkar Prakashan.

MLA استشهاد

Lal و P K. Goswami. Upkar's Objective Arithmetic. Upkar Prakashan.