Chart of the Sacramento River from Suisun City to the American River : California / by Cadwalader Ringgold, Commander, U.S. Navy ; assisted by Edwin Cullberg, Lieut. of the Hydrotechnic Corps, Swedish Navy, and T.A. Emmet, civil engineer, 1850.
MLA
Ringgold, Cadwalader, 1802-1867. Chart of the Sacramento River from Suisun City to the American River : California / by Cadwalader Ringgold, Commander, U.S. Navy ; assisted by Edwin Cullberg, Lieut. of the Hydrotechnic Corps, Swedish Navy, and T.A. Emmet, civil engineer, 1850.. BRBL_00614. [1851?]. https://collections.library.yale.edu/catalog/15821473.
APA, 6th edition
Ringgold, Cadwalader, 1802-1867. (["BRBL_00614"])([1851?])[Chart of the Sacramento River from Suisun City to the American River : California / by Cadwalader Ringgold, Commander, U.S. Navy ; assisted by Edwin Cullberg, Lieut. of the Hydrotechnic Corps, Swedish Navy, and T.A. Emmet, civil engineer, 1850.]. https://collections.library.yale.edu/catalog/15821473.