Gaya APA
SHITARUKMI, S. et al (2017).
The effectiveness of PBL problems from students and tutors perspectives .
Yogyakarta:
AIPKI.
Gaya MLA
SHITARUKMI, Sawitri. et al.
"The effectiveness of PBL problems from students and tutors perspectives".
Yogyakarta:
AIPKI,
2017.
Artikel.