(1978). Writing for results: Principles and practice / Dugan Laird.
Čikaški stil citiranja (17. izdanje)Writing for Results: Principles and Practice / Dugan Laird. 1978.
MLA način citiranja (9. izdanje)Writing for Results: Principles and Practice / Dugan Laird. 1978.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.