http://repository.uhamka.ac.id/id/eprint/11496/
surat tugas, sertifikat HKI, instrumen KPS
Handayani, Sri Lestari
http://repository.uhamka.ac.id/id/eprint/11496/1/1.%202020_surat%20tugas%2BSertifikat%20HKI%2BInstrumen%20KPS%20%28Pencipta%20ke%201%20dari%201%29%2012.pdf