ahmad fariz bin mohamed;riza bin sulaiman;shaharudin bin idrus;bisharuzi bin omar;khairul nizam bin abdul maulud;nik mohd noor faizul bin md saad;nor`ain binti mohd jali;rd puteri khairani binti khirotdin;shamsul bin khamis.  (2018).  ukm campus tree id and hazardous trees assessment.  - .  . 

rahmah elfithri; mazlin mokhtar; jasni yaakub; mohamad mahathir amir sultan; rd puteri khairani bt khirotdin; siti amirah ishak.  (2016).  technical report on establishment of sustainability science demonstration pilot project on restoring and managing langat river, malaysia for future.  - pemantapan kerangka dan m.  . 

mohamad mahathir amir sultan, wan daraputri razali, rd. puteri khairani khirotdin & nik mohd noor faizul md. saad.  (2016).  saving energy in office: what can we do?.  - salam lestari.  . 

nik mohd noor faizul md saad; wan daraputri razali; rd puteri khairani khirotdin: mohamad mahathir bin amir sultan; nazren leman.  (2015).  amalan kelestarian: inisiatif penjimatan air di pejabat.  - salam lestari 35.  . 

jasni yaakob, rd puteri khairani khirotdin & nazren leman.  (2014).  sediment monitoring at the putrajaya wetland.  - jsps asian core program`s comprehensive symposium 4.  . 

nik mohd noor faizul md saad, wan daraputri razali, nazren leman, mohamad mahathir amir sultan & rd. puteri khairani khirotdin.  (2014).  mengorak langkah merealisasikan ukm pendaulat amanah negara.  - salam lestari.  .