Lawrence, John
Farrar Straus & Cudahy, 1959
Buku Teks
Riasanovsky, Nicholas V.
Oxford University Press, 1963
Buku Teks
Riasanovsky, Nicholas V.
Oxford University Press, 2011
Buku Teks
Mitchell, Mairin
Sidwick and Jackson, 1949
Buku Teks
Vernadsky, George
Yale University Press, 1954
Buku Teks