9780253111692 (electronic book)
0253111692 (electronic book)
9780253346803 (set : alk. paper)
0253346800 (set : alk. paper)
9780253346810 (v. 1 : alk. paper)
0253346819 (v. 1 : alk. paper)
9780253346834 (v. 2 : alk. paper)
0253346835 (v. 2 : alk. paper)
9780253346841 (v. 3 : alk. paper)
0253346843 (v. 3 : alk. paper)