APA (7th ed.) Citation

(1968). I do, and I understand (5. impr.). Chambers [u.a.].

Chicago Style (17th ed.) Citation

I Do, and I Understand. 5. impr. London: Chambers [u.a.], 1968.

MLA (9th ed.) Citation

I Do, and I Understand. 5. impr. Chambers [u.a.], 1968.