Παραπομπή APA

Nagendra Singh. (1972). Bhutan: Kingdom in the himalayas. Thomson Press.

Παραπομπή Chicago Style

Nagendra Singh. Bhutan: Kingdom in the Himalayas. Thomson Press, 1972.

Παραπομπή MLA

Nagendra Singh. Bhutan: Kingdom in the Himalayas. Thomson Press, 1972.