Abbs, B., & Freebairn, I. (1977). Starting strategies: Strategies 1, an integrated language course for beginners of english (1a. ed.). Longman.
芝加哥风格引文Abbs, Brian, 与 Ingrid Freebairn. Starting Strategies: Strategies 1, an Integrated Language Course for Beginners of English. 1a. ed. Essex: Longman, 1977.
MLA引文Abbs, Brian, 与 Ingrid Freebairn. Starting Strategies: Strategies 1, an Integrated Language Course for Beginners of English. 1a. ed. Longman, 1977.
警告：这些引文格式不一定是100％准确.