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Tomlins, Keith, Bennett, Ben, Stathers, Tanya ORCID: 0000-0002-7767-6186 , Linton, John, Onumah, Gideon, Coote, Hilary, Kleih, Ulrich, Priebe, Jan and Bechoff, Aurelie ORCID: 0000-0001-8141-4448 (2016) Reducing postharvest losses in the OIC member countries. COMCEC Agricultural Working Group. pp. 1-194.

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Goodland, Andrew, Onumah, Gideon, Amadi, Juliana and Griffith, Geoffrey (1999) Rural finance. Natural Resources Institute Policy Series (1) . Natural Resources Institute, Chatham Maritime, Kent, UK. ISBN 0859545075

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Meijerink, Gerdien, Onumah, Gideon and Posthumus, Helena (2011) Innovations in risk insurance models. Discussion Paper. Agrinatura / ESFIM, Paris, France.