(1992). Webster's 21st century: Complete guide to speech, style and grammar. T. Nelson.
Chicagoスタイル(17版)引用形式Webster's 21st Century: Complete Guide to Speech, Style and Grammar. Nashville: T. Nelson, 1992.
MLA(9版)引用形式Webster's 21st Century: Complete Guide to Speech, Style and Grammar. T. Nelson, 1992.
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