Cita APA (7a ed.)

West, M. P. (1990). A general service list of English words with semantic frequences and a supplementary word-list for the writing of popular science and technology. Longman.

Cita Chicago Style (17a ed.)

West, Michael Philip. A General Service List of English Words with Semantic Frequences and a Supplementary Word-list for the Writing of Popular Science and Technology. Harlow: Longman, 1990.

Cita MLA (9a ed.)

West, Michael Philip. A General Service List of English Words with Semantic Frequences and a Supplementary Word-list for the Writing of Popular Science and Technology. Longman, 1990.