Text book: Business Vocabulary in Practice (Collins Cobuild).
Collins. (2004). Business Vocabulary in Practice (Collins Cobuild). U.K: COBUILD.
Based on website exploration, our group learned from :
https://www.google.co.uk/search?q=lexical+definition&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwi8qrSeqZ_VAhWCyrwKHTa_CfQQ_AUICCgD&biw=1242&bih=557#tbm=isch&q=lexical+syllabus+definition&imgrc=bTTzsx_0bQDtcM that a lexical syllabus is:
“Based on vocabulary and lexical units”.
Collins' (2004) "Business Vocabulary in Practice " fits this definition of lexical syllabus, therefore our group decided that this text book is developed based on lexical syllabus.
References:
https://www.google.co.uk/search?q=lexical+definition&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwi8qrSeqZ_VAhWCyrwKHTa_CfQQ_AUICCgD&biw=1242&bih=557#tbm=isch&q=lexical+syllabus+definition&imgrc=bTTzsx_0bQDtcM. Retrieved on July, 23 - 2017