Gunther, R. (1957). Wasserdichtmachen in Rezeptform. Lapp.
Cita Chicago (17th ed.)Gunther, Rudolf. Wasserdichtmachen in Rezeptform. Monchengladbach, Germany: Lapp, 1957.
Cita MLA (8th ed.)Gunther, Rudolf. Wasserdichtmachen in Rezeptform. Lapp, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.