APA (7th ed.) Citation

Canadian Hydrographic Service & United States. Defense Mapping Agency. Hydrographic/Topographic Center. (1985). Canada, Gulf of St. Lawrence (4th ed., Dec. 14, 1985 (Correct through NM 50/85).). Defense Mapping Agency Hydrographic/Topographic Center.

Chicago Style (17th ed.) Citation

Canadian Hydrographic Service and United States. Defense Mapping Agency. Hydrographic/Topographic Center. Canada, Gulf of St. Lawrence. 4th ed., Dec. 14, 1985 (Correct through NM 50/85). Washington, D.C.: Defense Mapping Agency Hydrographic/Topographic Center, 1985.

MLA (9th ed.) Citation

Canadian Hydrographic Service and United States. Defense Mapping Agency. Hydrographic/Topographic Center. Canada, Gulf of St. Lawrence. 4th ed., Dec. 14, 1985 (Correct through NM 50/85). Defense Mapping Agency Hydrographic/Topographic Center, 1985.