APA Citation

Backer, C. The Problem of Krakatao as seen by a Botanist by C A Backer. Surabaya:Backer.

Chicago Style Citation

Backer, C.A. The Problem of Krakatao As Seen By a Botanist By C A Backer. Surabaya:Backer.

MLA Citation

Backer, C.A. The Problem of Krakatao As Seen By a Botanist By C A Backer. Surabaya:Backer.

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