Авторы
Roger Prud'homme K. H. Spencer Pickett Michelle Peckham Jeremy D. Popkin Brigitte Peucker Brad Prager Bourne Pippa Dutwin Phyllis Dollfus Philippe Janning Petra Vickers Peter Forrester Paul Aldridge Paul Reddy Prasuna Boon Philip Pattengale Paula Byrne Peter Pedi Gillig Marie Paulette Jonathan Peterson Anthony Paul Pradip R. Patel Ashley Packard PCG Education