Cita APA (7a ed.)

Akkerman, R. J., Krieken, P. J. v., & Pannenborg, C. O. (1977). Declarations on principles: A quest for universal peace. Sijthoff.

Cita Chicago Style (17a ed.)

Akkerman, Robert J., Peter J. van Krieken, y Charles O. Pannenborg. Declarations on Principles: A Quest for Universal Peace. Leyden: Sijthoff, 1977.

Cita MLA (9a ed.)

Akkerman, Robert J., et al. Declarations on Principles: A Quest for Universal Peace. Sijthoff, 1977.