APA (7th ed.) Citation

Wächter, W., & Rötzsch, H. (1989). Study on mass conservation techniques for treatment of library and archives material. UNESCO.

Chicago Style (17th ed.) Citation

Wächter, Wolfgang, and Helmuth Rötzsch. Study on Mass Conservation Techniques for Treatment of Library and Archives Material. Paris: UNESCO, 1989.

MLA (9th ed.) Citation

Wächter, Wolfgang, and Helmuth Rötzsch. Study on Mass Conservation Techniques for Treatment of Library and Archives Material. UNESCO, 1989.