Fatimah Azzahra, examiner
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2020
UI - Tugas Akhir
Sitanggang, Parulian Thomas Habuktian, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2023
UI - Tesis Membership
Johnson, Willis H., author
Holt, Rinehart and Winston, 1961
Buku Teks
Haber, Audrey, author
Addison-Wesley, 1973
Buku Teks
Raisz, Erwin Josephus, 1893-, author
McGraw-Hill, 1948
Buku Teks