Παραπομπή APA

Guhathakurta, T. R. (2000). Rare earths. Rare earths association of India.

Παραπομπή Chicago Style

Guhathakurta, T. R. Rare Earths. Mumbai: Rare earths association of India, 2000.

Παραπομπή MLA

Guhathakurta, T. R. Rare Earths. Rare earths association of India, 2000.