Παραπομπή APA

Coffey, J. I. R. p. (1961). The presidential staff. National planning association.

Παραπομπή Chicago Style

Coffey, Joseph I Rock,Vincent p. The Presidential Staff. Washington D C: National planning association, 1961.

Παραπομπή MLA

Coffey, Joseph I Rock,Vincent p. The Presidential Staff. National planning association, 1961.