APA Style

Simon, Raymond, Zapala, Joseph. ([s.a.]). Public relations Workbook: Writing & Techniques ( R ) . USA: NTC Business Books.

Chicago Style

Simon, Raymond, Zapala, Joseph. Public relations Workbook: Writing & Techniques ( R ). USA: NTC Business Books, [s.a.]. BUKU.

MLA Style

Simon, Raymond, Zapala, Joseph. Public relations Workbook: Writing & Techniques ( R ). USA: NTC Business Books, [s.a.]. BUKU.

Turabian Style

Simon, Raymond, Zapala, Joseph. Public relations Workbook: Writing & Techniques ( R ). USA: NTC Business Books, [s.a.]. BUKU.