Não informado. Trends. National School Public Relations Association.
Citace podle Chicago (17th ed.)Não informado. Trends. Washington: National School Public Relations Association.
Citace podle MLA (8th ed.)Não informado. Trends. National School Public Relations Association.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..