APA (7th ed.) Citation

Tagawa, M., & Iwatsuki, K. (1960). On the species of Dryopteris, Subgenus Pycnopteris ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Tagawa, M., and Kunio Iwatsuki. On the Species of Dryopteris, Subgenus Pycnopteris. [Sonderdr.]. 1960.

MLA (9th ed.) Citation

Tagawa, M., and Kunio Iwatsuki. On the Species of Dryopteris, Subgenus Pycnopteris. [Sonderdr.]. 1960.

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