APA Style

J.I.Igwe, G. (1991). Powder technology and multiphase system : gas permeametry and surface area measurement . England: Elis Horwood Limited.

MLA Style

J.I.Igwe, Godwin.. "Powder technology and multiphase system : gas permeametry and surface area measurement". England: Elis Horwood Limited, 1991. Buku.