Não informado. (1927). Colloquium Publications of the American Mathematical Society. American Mathematical Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Colloquium Publications of the American Mathematical Society. Providence, RI: American Mathematical Society, 1927.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Colloquium Publications of the American Mathematical Society. American Mathematical Society, 1927.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.