Place edition information after the title. End the title with a comma; space and enclose the edition statement in parentheses.
Express numbers representing editions in Arabic ordinals, as first becomes 1st, IV becomes 4th.
Abbreviate the word edition and other descriptive words:
End with a period.
Schott, J. & Priest, J. (2002). Leading antenatal classes: A practical guide, (2nd ed.). Boston, MA: Books for Midwives.