Waterborne commerce of the United States. Part 4: waterways and harbors, Pacific Coast, Alaska and Hawaii. Calendar year 1990
MLA
Waterborne Commerce of the United States. Part 4: Waterways and Harbors, Pacific Coast, Alaska and Hawaii. Calendar Year 1990. , 1994
APA, 7th edition
(1994). Waterborne commerce of the United States. Part 4: waterways and harbors, Pacific Coast, Alaska and Hawaii. Calendar year 1990.
Chicago, 17th edition
Waterborne commerce of the United States. Part 4: waterways and harbors, Pacific Coast, Alaska and Hawaii. Calendar year 1990. 1994