Haeberle, E. J., & Simons, W. (1995). Sexology in Europe: A Directory of Institutions, Organizations, Resource Centers, Training Programs, and Scientific Journals / Erwin J. Haeberle, Wolfgang Simons (eds.). Robert-Koch-Institut.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHaeberle, Erwin J., और Wolfgang Simons. Sexology in Europe: A Directory of Institutions, Organizations, Resource Centers, Training Programs, and Scientific Journals / Erwin J. Haeberle, Wolfgang Simons (eds.). Berlin: Robert-Koch-Institut, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHaeberle, Erwin J., और Wolfgang Simons. Sexology in Europe: A Directory of Institutions, Organizations, Resource Centers, Training Programs, and Scientific Journals / Erwin J. Haeberle, Wolfgang Simons (eds.). Robert-Koch-Institut, 1995.
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