Romer, Alfred Sherwood, author
W.B. Saunders, 1968
Buku Teks
Romer, Alfred Sherwood, author
Saunders College, 1977
Buku Teks
Romer, Alfred Sherwood, author
Saunders College, 1985
Buku Teks
Romer, Alfred Sherwood, author
W.B. Saunders, 1978
Buku Teks
Hildebrand, Milton, 1918-, author
John Wiley & Sons, 1982
Buku Teks