Eesti Teaduste Akadeemia (1989- ), Tartu Ülikool, Tallinna Tehnikaülikool, Tallinna Ülikool, & Eesti Maaülikool. Estonian journal of engineering. Publlished by the Estonian Academy of Sciences in collaboration with the University of Tartu, Tallinn University of Technology, Tallinn University, and the Estonian University of Life Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Eesti Teaduste Akadeemia (1989- ), Tartu Ülikool, Tallinna Tehnikaülikool, Tallinna Ülikool, و Eesti Maaülikool. Estonian Journal of Engineering. Tallinn: Publlished by the Estonian Academy of Sciences in collaboration with the University of Tartu, Tallinn University of Technology, Tallinn University, and the Estonian University of Life Sciences.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Eesti Teaduste Akadeemia (1989- ), et al. Estonian Journal of Engineering. Publlished by the Estonian Academy of Sciences in collaboration with the University of Tartu, Tallinn University of Technology, Tallinn University, and the Estonian University of Life Sciences.