Tohutoro APA (7th ed.)
Cockburn, H. (1962). Poultry in east africa. EALB ( kenya).
Tohutoru Kātū Chicago (17th ed.)
Cockburn, Helen. Poultry in East Africa. Nairobi: EALB ( kenya), 1962.
Tohutoro MLA (9th ed.)
Cockburn, Helen. Poultry in East Africa. EALB ( kenya), 1962.
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