APA引文

Van Duyn J. (1975). practical system and procedures manual. Reston publishing co.

Chicago Edition Citation

Van Duyn J. Practical System and Procedures Manual. Virginia: Reston publishing co, 1975.

MLA引文

Van Duyn J. Practical System and Procedures Manual. Reston publishing co, 1975.

警告：這些引文格式不一定是100％准確.