APA استشهاد

Avtar Singh. (1977). Sale of goods (2nd ed.). Eastern Book.

استشهاد بنمط شيكاغو

Avtar Singh. Sale of Goods. 2nd ed. Lucknow: Eastern Book, 1977.

MLA استشهاد

Avtar Singh. Sale of Goods. 2nd ed. Eastern Book, 1977.