* {{cite journal|first=Peter D.|last=Mosses|authorlink=Peter Mosses|title=A Foreword to 'Fundamental Concepts in Programming Languages'|journal=[[Higher-Order and Symbolic Computation]]|volume=13|pages=7–9|year=2000|doi=10.1023/A:1010048229036|s2cid=39258759}}
* {{cite journaltechreport |firstlast1=Strachey |first1=Christopher |lastdate=1967 |title=Fundamental Concepts in Programming Languages |url= |institution=Lecture notes for the International Summer School in Computer Programming at Copenhagen |number=}} Also: {{cite journal |last1=Strachey |authorlinkfirst1=Christopher Strachey|date=2000 |title=Fundamental Concepts in Programming Languages |url=https://link.springer.com/article/10.1023%2FA%3A1010000313106 |journal=[[Higher-Order and Symbolic Computation]] |volume=13 |issue=1–2 |pages=11–49|year=2000 |doi=10.1023/A:1010000313106 |s2cid=14124601 |doi-access=}}