edited by Dagobert D. Runes
Littlefield, Adam & Co., 1963
Buku Referensi
Jesperson, Otto
George Allen and Unwin, 1951
Buku Teks
The Journal of Philosophy, Inc, 2018
Majalah, Jurnal, Buletin
Ohio : Messenger Press
Majalah, Jurnal, Buletin
Radhakrishnan, S. (Sarvepalli), 1888-1975, author
George Allen and Unwin, 1930
Buku Teks