Backer, C. A. The problem of Krakatao as seen by a botanist: By C. A. Backer. Published by the author.
Chicago Style (17th ed.) CitationBacker, C. A. The Problem of Krakatao as Seen by a Botanist: By C. A. Backer. Published by the Author.
MLA (9th ed.) CitationBacker, C. A. The Problem of Krakatao as Seen by a Botanist: By C. A. Backer. Published by the Author.
Warning: These citations may not always be 100% accurate.