?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Yerimadesi&rft.aulast=Yerimadesi&rft.au=Yerimadesi%2C+Yerimadesi&rft.atitle=Efforts+to+Improve+Competency+of+Teacher+MGMP+Chemistry%2C+Padang+City+Through+Training+For+Development+of+Teaching+Materials+Based+on+Guided+Discovery+Learning&rft.date=2019&rft.issn=Print+%3A+2621-0719+dan+Online+%3A+2621-4784&rft.title=Pelita+Eksakta&rft.volume=2&rft.issue=2&rft.pages=121-129&rft.genre=article