Cita APA

Read, P. G. (1978). Gemmological instruments. Newnes - Butterworths.

Chicago Edition Citation

Read, Peter G. Gemmological Instruments. London: Newnes - Butterworths, 1978.

Cita MLA

Read, Peter G. Gemmological Instruments. Newnes - Butterworths, 1978.

Atenció: Aquestes cites poden no estar 100% correctes.