APA-viite (7. p.)
Gichira, R. (1993). A textbook of office practice and organisation. East African Educational Publishers.
Chicago-viite (17. p.)
Gichira, Robert. A Textbook of Office Practice and Organisation. Nairobi: East African Educational Publishers, 1993.
MLA-viite (9. p.)
Gichira, Robert. A Textbook of Office Practice and Organisation. East African Educational Publishers, 1993.
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