diff --git a/README.md b/README.md
index 32d86cd..48a1661 100644
--- a/README.md
+++ b/README.md
@@ -30,5 +30,5 @@ Every line is result of curve fitting using the least squares method.
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 ## Reference
-- Sode, Y., 2024: Applicability of Random Simulation to the Evaluation of Interpolation. on the 2024 Annual Meeting. The Palaeontological Society of Japan, Abstracts with Programs, P72-C, p.53. 
+- Sode, Y., 2024: Applicability of Random Simulation to the Evaluation of Interpolation. on the 2024 Annual Meeting. _Palaeontological_ _Society_ _of_ _Japan_, Abstracts with Programs, P72-C, p.53.