CC Antya 19.75

ei līlā mahāprabhura raghunātha-dāsa
gaurāṅga-stava-kalpavṛkṣe kariyāche prakāśa
Word for word: 
ei līlā — this pastime; mahāprabhura — of Śrī Caitanya Mahāprabhu; raghunātha-dāsa — Raghunātha dāsa Gosvāmī; gaurāṅga-stava-kalpa-vṛkṣe — in his book known as Gaurāṅga-stava-kalpavṛkṣa; kariyāche prakāśa — has described very nicely.
Translation: 
This pastime of Śrī Caitanya Mahāprabhu’s has been described very nicely by Raghunātha dāsa Gosvāmī in his book known as Gaurāṅga-stava-kalpavṛkṣa.