Herriot, James, 1916-1995
PT Gramedia Pustaka Utama, 2019
Buku Teks
Rifka Widyastuti
2019
UI - Tugas Akhir
Universitas Indonesia, 2007
UI - Skripsi Membership
Universitas Indonesia, 2007
UI - Skripsi Membership
Birkhoff, Garrett
John Wiley & Sons, 1978
Buku Teks