Thomas Erl; Anish Karmarkar; Priscilla Walmsley; Hugo Haas; L. Umit Yalcinalp; Kevin Liu; David Umit Orchard; Andre Tost; James (2008) Kovakantinen kirja
Thomas Erl; Anish Karmarkar; Priscilla Walmsley; Hugo Haas; L. Yalcinalp; Kevin Liu; David Orchard; Andre Tost; Pasley Pearson Education (US) (2017) Pehmeäkantinen kirja