Dyfyniad APA

Upendra Kumar Singh. (2019). World great social workers. ABD Publishers.

Dyfyniad Arddull Chicago

Upendra Kumar Singh. World Great Social Workers. New Delhi: ABD Publishers, 2019.

Dyfyniad MLA

Upendra Kumar Singh. World Great Social Workers. ABD Publishers, 2019.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.