Cita APA (7th ed.)

Gupta, C. K., & Suri, A. K. (1994). Extractive metallurgy of niobium. CRC Press.

Cita Chicago (17th ed.)

Gupta, C. K., i A. K. Suri. Extractive Metallurgy of Niobium. Boca Raton: CRC Press, 1994.

Cita MLA (9th ed.)

Gupta, C. K., i A. K. Suri. Extractive Metallurgy of Niobium. CRC Press, 1994.