The Great Lakes/St. Lawrence Seaway system :
a cooperative marketing approach.
APA Citation
Great Lakes Commission. (1981). The Great Lakes/St. Lawrence Seaway system: a cooperative marketing approach. [S.l.]: Simat, Hellieson & Eichner, Inc..
MLA Citation
Great Lakes Commission. The Great Lakes/St. Lawrence Seaway System: a Cooperative Marketing Approach. [S.l.]: Simat, Hellieson & Eichner, Inc., 1981.
Warning: These citations may not always be complete (especially for serials).