Engel, H. (1977). Tragsysteme structure systems. Saint Joseph's University.
Chicago Style (17th ed.) CitationEngel, Heino. Tragsysteme Structure Systems. Saint Joseph's University, 1977.
MLA (8th ed.) CitationEngel, Heino. Tragsysteme Structure Systems. Saint Joseph's University, 1977.
Warning: These citations may not always be 100% accurate.