MLA

Alden, James, 1810-1877. Sketch from the mouth of the Coatzacoalcos River, to the town of Mina-Titlan / made by order of Commodore M.C. Perry, comdg. home squadron ; by lieut. Alden, Blunt, & May.. BRBL_00648. 1847. https://collections.library.yale.edu/catalog/15822322.

APA, 6th edition

Alden, James, 1810-1877. (["BRBL_00648"])(1847)[Sketch from the mouth of the Coatzacoalcos River, to the town of Mina-Titlan / made by order of Commodore M.C. Perry, comdg. home squadron ; by lieut. Alden, Blunt, & May.]. https://collections.library.yale.edu/catalog/15822322.