diff --git a/pages/Sigman___Dos marchando juntos.md b/pages/Sigman___Dos marchando juntos.md
index 9e253c2..4ac59ad 100644
--- a/pages/Sigman___Dos marchando juntos.md	
+++ b/pages/Sigman___Dos marchando juntos.md	
@@ -83,5 +83,7 @@
 		  logseq.order-list-type:: number
 		- Aristoteles. *Poética*. (2000). España: Icaria.
 		  logseq.order-list-type:: number
+		- Triplett, N. (1898). *The dynamogenic factors in pacemaking and competition*. The American journal of psychology, 9(4), 507-533.
+		  logseq.order-list-type:: number
 		- logseq.order-list-type:: number
 -
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