Diamond A (2013). "Executive functions". Annu Rev Psychol. 64: 135–168. doi:10.1146/annurev-psych-113011-143750. PMC 4084861Freely accessible. PMID 23020641. WM (holding information in mind and manipulating it) is distinct from short-term memory (just holding information in mind). They cluster onto separate factors in factor analyses of children, adolescents, and adults (Alloway et al. 2004, Gathercole et al. 2004). They are linked to different neural subsystems. WM relies more on dorsolateral prefrontal cortex, whereas maintaining information in mind but not manipulating it [as long as the number of items is not huge (suprathreshold)] does not need involvement of dorsolateral prefrontal cortex (D’Esposito et al. 1999, Eldreth et al. 2006, Smith & Jonides 1999). Imaging studies show frontal activation only in ventrolateral prefrontal cortex for memory maintenance that is not suprathreshold.
Cowan, Nelson (2008). "What are the differences between long-term, short-term, and working memory?". Prog Brain Res. Progress in Brain Research. 169 (169): 323–338. doi:10.1016/S0079-6123(07)00020-9. ISBN 978-0-444-53164-3. PMC 2657600Freely accessible. PMID 18394484.
Baddeley A (October 2003). "Working memory: looking back and looking". Nature Reviews Neuroscience. 4 (10): 829–39. doi:10.1038/nrn1201. PMID 14523382.
Miller GA (March 1956). "The magical number seven plus or minus two: some limits on our capacity for processing information". Psychological Review. 63 (2): 81–97. doi:10.1037/h0043158. PMID 13310704. Republished: Miller GA (April 1994). "The magical number seven, plus or minus two: some limits on our capacity for processing information. 1956". Psychological Review. 101 (2): 343–52. doi:10.1037/0033-295X.101.2.343. PMID 8022966.
Cowan, Nelson (2001). "The magical number 4 in short-term memory: A reconsideration of mental storage capacity". Behavioral and Brain Sciences. 24: 87–185. doi:10.1017/S0140525X01003922. PMID 11515286.