(1977). A general service list of English words: With semantic frequencies and a supplementary word-list for the writing of popular science and technology (14. impr.). Longman.
Chicago-Zitierstil (17. Ausg.)A General Service List of English Words: With Semantic Frequencies and a Supplementary Word-list for the Writing of Popular Science and Technology. 14. impr. London: Longman, 1977.
MLA-Zitierstil (9. Ausg.)A General Service List of English Words: With Semantic Frequencies and a Supplementary Word-list for the Writing of Popular Science and Technology. 14. impr. Longman, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.