APA (7th ed.) Citation

(1989). The Circulatory system and the respiratory system. Churchill Livingstone.

Chicago Style (17th ed.) Citation

The Circulatory System and the Respiratory System. Edinburgh: Churchill Livingstone, 1989.

MLA (9th ed.) Citation

The Circulatory System and the Respiratory System. Churchill Livingstone, 1989.

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