diff --git a/04-halstead-complexity/04-halstead-complexity.tex b/04-halstead-complexity/04-halstead-complexity.tex
index e4c8bfa..a214b45 100644
--- a/04-halstead-complexity/04-halstead-complexity.tex
+++ b/04-halstead-complexity/04-halstead-complexity.tex
@@ -92,9 +92,11 @@
 \end{itemize}
 }
 
-\pitch{
-\pptQuote{bill-curtis.jpg}{In studying some error data provided us by Rome Air Development Center, Phil Milliman and I found Halstead's metric a remarkably accurate predictor of delivered bugs in a system developed with modern programming practices and tools}{\textit{Program Complexity and Software Errors: \newline A Front End for Reliability}, \newline Bill Curtis (father of SEI CMM), 1979}
-}
+\qte
+  [Bill Curtis]
+  {bill-curtis.jpg}
+  {In studying some error data provided us by Rome Air Development Center, Phil Milliman and I found Halstead's metric a remarkably accurate predictor of delivered bugs in a system developed with modern programming practices and tools}
+  {curtis1979}
 
 \pitch{Halstead Complexity is supported by a few tools:
 \begin{itemize}
diff --git a/main.bib b/main.bib
index 3e19ea0..77a9b64 100644
--- a/main.bib
+++ b/main.bib
@@ -1148,4 +1148,12 @@ @article{bieman1995cohesion
   pages={259--262},
   year={1995},
   publisher={ACM New York, NY, USA}
-}
\ No newline at end of file
+}
+
+@inproceedings{curtis1979,
+  title={{Program Complexity and Software Errors: A Front End for Reliability}},
+  author={Curtis, Bill},
+  booktitle={Proceedings from the Fourth Summer Software Engineering Workshop},
+  pages={217--238},
+  year={1979}
+}