APA (7th ed.) Citation

Heijder, A., & Geuns, H. v. (1976). Professional codes of ethics. Amnesty International.

Chicago Style (17th ed.) Citation

Heijder, Alfred, and Herman van Geuns. Professional Codes of Ethics. London: Amnesty International, 1976.

MLA (9th ed.) Citation

Heijder, Alfred, and Herman van Geuns. Professional Codes of Ethics. Amnesty International, 1976.