APA

lewin d., . (1980). legical design of switiching cricui. nairobi: the english language book.

Chicago

lewin douglas, . 1980. legical design of switiching cricui. nairobi: the english language book.

Harvard

lewin d., . (1980). legical design of switiching cricui. nairobi: the english language book.

MLA

lewin douglas, . legical design of switiching cricui. nairobi: the english language book. 1980.