APA (7th ed.) Citation

Okada, Y. (1930). [The Anura. [publisher not identified].

Chicago Style (17th ed.) Citation

Okada, Yaichirō. [The Anura. Tokyo]: [publisher not identified], 1930.

MLA (9th ed.) Citation

Okada, Yaichirō. [The Anura. [publisher not identified], 1930.