APA (7th ed.) Citation

Wilkes, I. (1971). British initials and abbreviations (3rd ed.). Leonard Hill.

Chicago Style (17th ed.) Citation

Wilkes, Ian. British Initials and Abbreviations. 3rd ed. London: Leonard Hill, 1971.

MLA (9th ed.) Citation

Wilkes, Ian. British Initials and Abbreviations. 3rd ed. Leonard Hill, 1971.