Bailey, H. J., Brautigam, K. M., & Doran, T. H. (1984). Apple LOGO: Activities for exploring turtle graphics. Brady Communications Co..
芝加哥风格引文Bailey, Harold J., Kathleen M. Brautigam, 与 Trudy H. Doran. Apple LOGO: Activities for Exploring Turtle Graphics. Bowie, Md.: Brady Communications Co., 1984.
MLA引文Bailey, Harold J., et al. Apple LOGO: Activities for Exploring Turtle Graphics. Brady Communications Co., 1984.
警告：这些引文格式不一定是100％准确.