APA:
Clarkson, Thomas (1791). Letters on the slave-trade, and the state of the natives in those parts of Africa, which are contiguous to Fort St. Louis and Goree, written at Paris in December 1789 and January 1790. URN:NBN:SI:DOC-TF5YIRWL from http://www.dlib.si
MLA:
Clarkson, Thomas.
Letters on the slave-trade, and the state of the natives in those parts of Africa, which are contiguous to Fort St. Louis and Goree, written at Paris in December 1789 and January 1790.
printed and sold by James Phillips, George Yard ..., 1791.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-TF5YIRWL>