APA (7th ed.) Citation

(1972). Biological tissue in heart valve replacement. Butterworths.

Chicago Style (17th ed.) Citation

Biological Tissue in Heart Valve Replacement. London: Butterworths, 1972.

MLA (9th ed.) Citation

Biological Tissue in Heart Valve Replacement. Butterworths, 1972.

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