Kenya Institute of Education, Arnhardt, H. P., & Streit, G. (1991). Willkommen: A German language course for secondary schools in Kenya (First published in 1991.). Kenya Institute of Education.
Citazione stile Chigago Style (17a edizione)Kenya Institute of Education, Hans Peter Arnhardt, e Gerda Streit. Willkommen: A German Language Course for Secondary Schools in Kenya. First published in 1991. Nairobi: Kenya Institute of Education, 1991.
Citatione MLA (9a ed.)Kenya Institute of Education, et al. Willkommen: A German Language Course for Secondary Schools in Kenya. First published in 1991. Kenya Institute of Education, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.