APA (7th ed.) Citation

(1972). The essentials of first aid (Second Edition.). The St.John Ambulance Association and brigade.

Chicago Style (17th ed.) Citation

The Essentials of First Aid. Second Edition. Great Britain: The St.John Ambulance Association and brigade, 1972.

MLA (9th ed.) Citation

The Essentials of First Aid. Second Edition. The St.John Ambulance Association and brigade, 1972.

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