APA
Heine B., . (1970). Status and use of African lingua francas. Munchen: Weltforum Verlag.
Chicago
Heine Bernd, . 1970. Status and use of African lingua francas. Munchen: Weltforum Verlag.
Harvard
Heine B., . (1970). Status and use of African lingua francas. Munchen: Weltforum Verlag.
MLA
Heine Bernd, . Status and use of African lingua francas. Munchen: Weltforum Verlag. 1970.