Methling, D., & Maxam, U. (1989). OPTOMETRIE. Technik.
Chicago Style (17th ed.) CitationMethling, Dieter, and Ulrich Maxam. OPTOMETRIE. Berlin: Technik, 1989.
MLA (9th ed.) CitationMethling, Dieter, and Ulrich Maxam. OPTOMETRIE. Technik, 1989.
Warning: These citations may not always be 100% accurate.