Cita APA (7a ed.)

Liebaers, H. (1980). Mostly in the line of duty: Thirty years with books. Martinus Nijhoff Publishers.

Cita Chicago Style (17a ed.)

Liebaers, Herman. Mostly in the Line of Duty: Thirty Years with Books. The Hague [etc.]: Martinus Nijhoff Publishers, 1980.

Cita MLA (9a ed.)

Liebaers, Herman. Mostly in the Line of Duty: Thirty Years with Books. Martinus Nijhoff Publishers, 1980.