Gaya APA

Kristiyana, N., Widyaningrum, W. (2018). MANAJERIAL SKILL . Ponorogo: CALINA MEDIA.

Gaya MLA

Kristiyana, Naning., Widyaningrum, Wahna. "MANAJERIAL SKILL". Ponorogo: CALINA MEDIA, 2018. Buku Inti.