1. Effective Selling Skills Certificate Programme 銷售技巧證書課程

n.d.

Pamphlet

2. Effective Selling Skills Certificate Programme 銷售技巧證書課程

n.d.

Pamphlet

3. Hong Kong. Land Office. Land Office circular memorandum no.17, 1964

Government document

4. Hong Kong. Land Office. Land Office circular memorandum no.21, 1965

Government document

5. Hong Kong. Land Office. Land Office circular memorandum no.23, 1965

Government document

6. Hong Kong. Land Office. Land Office circular memorandum no.33, 1968

Government document

7. Hong Kong. Land Office. Land Office circular memorandum no.42, 1974

Government document

8. Hong Kong. Land Office. Land Office circular memorandum no.44, 1974

Government document

9. Hong Kong. Land Office. Land Office circular memorandum no.49, 1977

Government document

10. Hong Kong. Land Office. Land Office circular memorandum no.51, 1977

Government document