"Many women and men professionally engaged in advertising do have sensitive consciences, high ethical standards and a strong sense of responsibility. But even for them external pressures — from the clients who commission their work as well as from the competitive internal dynamics of their profession — can create powerful inducements to unethical behavior. That underlines the need for external structures and systems to support and encourage responsible practice in advertising and to discourage the irresponsible. Voluntary ethical codes are one such source of support. These already exist in a number of places. Welcome as they are, though, they are only as effective as the willingness of advertisers to comply strictly with them. "It is up to the directors and managers of the media which carry advertising to make known to the public, to subscribe to and to apply the codes of professional ethics which already have been opportunely established so as to have the cooperation of the public in making these codes still better and in enforcing their observance." We emphasize the importance of public involvement. Representatives of the public should participate in the formulation, application and periodic updating of ethical codes. The public representatives should include ethicists and church people, as well as representatives of consumer groups. Individuals do well to organize themselves into such groups in order to protect their interests in relation to commercial interests." (Conclusion, p.20)