Rombach, E. (1988). Ziele - was suchen Spione? Direktorat T, 54-74.
Cita Chicago Style (17a ed.)Rombach, Engelbert. "Ziele - Was Suchen Spione?" Direktorat T 1988: 54-74.
Cita MLA (8a ed.)Rombach, Engelbert. "Ziele - Was Suchen Spione?" Direktorat T, 1988, pp. 54-74.
Precaución: Estas citas no son 100% exactas.