APA (7th ed.) Citation
Sitter, W. d., & Schaar, J. P. v. d. (1934). Kosmos. Amsterdam Academic Archive.
Chicago Style (17th ed.) Citation
Sitter, William de, and Jan Pieter van der Schaar. Kosmos. [Amsterdam]: Amsterdam Academic Archive, 1934.
MLA (9th ed.) Citation
Sitter, William de, and Jan Pieter van der Schaar. Kosmos. Amsterdam Academic Archive, 1934.
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