Παραπομπή APA

Singh, R. N. Upkars new pattern tests of objective english. Upkar Prakashan.

Παραπομπή Chicago Style

Singh, R N. Upkars New Pattern Tests of Objective English. Agra: Upkar Prakashan.

Παραπομπή MLA

Singh, R N. Upkars New Pattern Tests of Objective English. Upkar Prakashan.