APA (7th ed.) Citation

Pugwash Symposium London, England, & Barnaby, F. (1969). Preventing the spread of nuclear weapons. Souvenir.

Chicago Style (17th ed.) Citation

Pugwash Symposium London, England, and Frank Barnaby. Preventing the Spread of Nuclear Weapons. London: Souvenir, 1969.

MLA (8th ed.) Citation

Pugwash Symposium London, England, and Frank Barnaby. Preventing the Spread of Nuclear Weapons. Souvenir, 1969.

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