APA (7th ed.) Citation

WEBSTER, R. (1975). GEMS - their sources, descriptions and indetification - Robert Webster. Butterworths.

Chicago Style (17th ed.) Citation

WEBSTER, Robert. GEMS - Their Sources, Descriptions and Indetification - Robert Webster. Butterworths, 1975.

MLA (8th ed.) Citation

WEBSTER, Robert. GEMS - Their Sources, Descriptions and Indetification - Robert Webster. Butterworths, 1975.

Warning: These citations may not always be 100% accurate.