APA (7th ed.) Citation

Oka, R., & 岡良助. (2005). Keijō hanjōki (Fukkokuban.). Ryūkei Shosha.

Chicago Style (17th ed.) Citation

Oka, Ryōsuke, and 岡良助. Keijō Hanjōki. Fukkokuban. Tōkyō: Ryūkei Shosha, 2005.

MLA (8th ed.) Citation

Oka, Ryōsuke, and 岡良助. Keijō Hanjōki. Fukkokuban. Ryūkei Shosha, 2005.

Warning: These citations may not always be 100% accurate.