Shammas, N. C. (1993). Teach yourself QBasic in 21 days. SAMS.
芝加哥风格引文Shammas, Namir Clement. Teach Yourself QBasic in 21 Days. Carmel, Ind.: SAMS, 1993.
MLA引文Shammas, Namir Clement. Teach Yourself QBasic in 21 Days. SAMS, 1993.
警告：这些引文格式不一定是100％准确.