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Causative verbs: have, make, let, get
source: English Lessons with Adam [engVid]   2014-3-2
quiz: http://www.engvid.com/english-grammar...

The Causative Form
source: LearnAmericanEnglishOnline  2009-02-23
make as a causative verb   2010-04-24

Causative Verbs
source: PerformanceELT     2013-04-16

English expressions with 'LET'
source: Learn English with Let's Talk      2015年1月18日

How to use "to have" in the present tense
source: Learn English with Rebecca      2016年9月26日
quiz: http://www.engvid.com/learn-english-g...

The causative: have + object + past participle (BBC Learners' Questions) 
source: BBC Learning English        2017年4月21日

Causative Verbs: MAKE, LET, HAVE and more
source: Simple English Videos        2017-08-25/09-01

Causative Verbs in English - Let, Make, Have, Get, Help 
source: Espresso English         2017年10月10日
Advanced English Grammar Course: http://www.espressoenglish.net/advanc...