by Christopher L. Salter ... [et al.]
Saunders College Publishing, 2000
Buku Teks SO
Israel, Saul
Holt, Rinehart and Winston, 1976
Buku Teks SO
James, Preston E.
Macmillan, 1972
Buku Teks SO
by Les Rowntree ... [and others]
Prentice-Hall, 2011
Buku Teks SO
Jackson, Richard H.
Wiley, 1986
Buku Teks SO