Sentence case only, unless proper noun, fullstop at end
Surname, Initial fullstop i.e. Green, J.N. or Green, J. N. and Henderson, G. —
Author Surname, Initial fullstop i.e. Green, J.N. or Green, J. N. and Henderson, G.
Publisher Eg: Journal of Air, 23.7: 1-33. OR: London : Macmillan