Não informado. (1899). Volta review. Alexander Graham Bell Association for the Deaf.
Chicagoスタイル(17版)引用形式Não informado. Volta Review. Washington: Alexander Graham Bell Association for the Deaf, 1899.
MLA(8版)引用形式Não informado. Volta Review. Alexander Graham Bell Association for the Deaf, 1899.
警告: この引用は必ずしも正確ではありません.