I have 2 papers one by Rees and Bloggs in 2002 and one by Rees Jones and Smith in 2002
now when referencing do they go in as Rees and Bloggs (2002a) and Rees et al (2002b) or can I do without the a and b
(when i use the NMC and the NMC Prep they have to be labelled a and b but I'm not sure with this one)
TIA