I’ma Neerakkal, Regimol C Cherian , Reethamma O.V Bejoy Nandan and Arun 2010
(2010), The Green Path to Sustainability Prospects and Challenges, ( (ISBN 978-81-907269-9-3) )
I’ma Neerakkal and Mercy Nedumpuram, 2005 .
(2005), A hand book on mushroom “Koon ulppadakarkoru vazhikatti” (Malayalam), ()
