Aitkin, Don
Pitman, 1985
Buku Teks SO
Aitkin, Don
Pitman, 1985
Buku Teks SO
Fried, Robert C.
Macmillan, 1968
Buku Teks SO
edited by Pierre Béguin
[Publisher not identified], [Date of publication not identified]
Buku Teks SO
by S.R. Davis ... [and others]
Angus and Robertson, 1954
Buku Teks SO