Instituto Brasileiro de Informação em Ciência e Tecnologia

Cytowanie według stylu APA (wyd. 7)

Não informado. (1952). Public relations. Institute of Public Relations.

Cytowanie według stylu Chicago (wyd. 17)

Não informado. Public Relations. London: Institute of Public Relations, 1952.

Cytowanie według stylu MLA (wyd. 8)

Não informado. Public Relations. Institute of Public Relations, 1952.