Van Duyn J. (1975). practical system and procedures manual. Reston publishing co.
シカゴスタイル引用形Van Duyn J. Practical System and Procedures Manual. Virginia: Reston publishing co, 1975.
MLA引用形式Van Duyn J. Practical System and Procedures Manual. Reston publishing co, 1975.
警告: この引用は必ずしも正確ではありません.