diff --git a/pages/Sigman___Dos marchando juntos.md b/pages/Sigman___Dos marchando juntos.md
index 68db449..060f8c2 100644
--- a/pages/Sigman___Dos marchando juntos.md	
+++ b/pages/Sigman___Dos marchando juntos.md	
@@ -71,6 +71,8 @@
 		  logseq.order-list-type:: number
 		- Plutarco. (1985). *Obras morales y de costumbres (Moralia)*. España: Editorial Gredos.
 		  logseq.order-list-type:: number
+		- Miller, S. E., Reavis, R. E., & Avila, B. N. (2018). *Associations between theory of mind, executive function, and friendship quality in middle childhood*. Merrill-Palmer Quarterly, 64(3), 397-426
+		  logseq.order-list-type:: number
 		- logseq.order-list-type:: number
 -
 -
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