APA (7th ed.) Citation

Yoshikawa, K. (2013). The Little Book on Permafrost. Arctic Portal / Page 21.

Chicago Style (17th ed.) Citation

Yoshikawa, Kenji. The Little Book on Permafrost. Arctic Portal / Page 21, 2013.

MLA (9th ed.) Citation

Yoshikawa, Kenji. The Little Book on Permafrost. Arctic Portal / Page 21, 2013.

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