Shortened footnote and citation:
{{sfn | Romer | 2018 | p=}}
* {{cite book | last=Romer | first=David | title=Advanced Macroeconomics | publisher=McGraw-Hill Education | publication-place=Dubuque | date=2018-02-19 | isbn=978-1-260-18521-8}}
Named reference:
<ref name="s217">{{cite book | last=Romer | first=David | title=Advanced Macroeconomics | publisher=McGraw-Hill Education | publication-place=Dubuque | date=2018-02-19 | isbn=978-1-260-18521-8 | page=}}</ref>