If more than one date is provided, use the earliest date. Revisions, later editions, condensed versions, or reprints of a book are not normally reviewed and may change title. This is particularly important to remember when dealing with reprints of autobiographies, diaries, reminiscences and travel accounts. Reviews of books published before 1900 are usually very difficult to locate. If you don't have the book in hand, search the online catalog by author or title to see if the LBCC libraries own it.
Vintage books ed.
The date you need for Angelou is 1986, not 1991. 1986 is the copyright date, and 1991 is the date of publication. Apart by Chinua Achebe has more than two separate listings in the online catalog. All other dates are reprints or newer publications of the same book. McDowell, Oblensky, 1959.