(PDF in English, Bahasa Indonesia, Farsi, Portuguese)
(PDF in English, Arabic, French, Hungarian, Italian, Portuguese, Spanish)
(PDF in English, Portuguese and Turkish)
(Online in English, Chinese, Spanish, French, Italian and Portuguese)
A GW-Project preserved book
(PDF in English, Turkish and Catalan)
(PDF in English and Spanish)
(PDF in English and Greek)
(in English, Afrikaans, Arabic, Chinese, Creole, French, Galacian, German, Greek, Hausa, Hungarian, Indonesian, Italian, Japanese, Malay, Mongolian, Persian, Portuguese, Setswana, Spanish, Swedish, Urdu, Yoruba)