Cita APA (7a ed.)

Kenya Institute of Education, Arnhardt, H. P., & Streit, G. (1989). Willkommen: A German language course for secondary schools in Kenya (First published in 1989.). Kenya Institute of Education.

Cita Chicago Style (17a ed.)

Kenya Institute of Education, Hans Peter Arnhardt, y Gerda Streit. Willkommen: A German Language Course for Secondary Schools in Kenya. First published in 1989. Nairobi: Kenya Institute of Education, 1989.

Cita MLA (9a ed.)

Kenya Institute of Education, et al. Willkommen: A German Language Course for Secondary Schools in Kenya. First published in 1989. Kenya Institute of Education, 1989.