Lua APA (7ú heag.)

WAINWRIGHT GORDON R. (1992). S.T.E.P.S. FOR SUCCESS: SELF TRAINING IN ESSENTIAL PERSONAL SKILLS. MERCURY BOOKS.

Lua i Stíl Chicago (17ú heag.)

WAINWRIGHT GORDON R. S.T.E.P.S. FOR SUCCESS: SELF TRAINING IN ESSENTIAL PERSONAL SKILLS. LONDON: MERCURY BOOKS, 1992.

Lua MLA (9ú heag.)

WAINWRIGHT GORDON R. S.T.E.P.S. FOR SUCCESS: SELF TRAINING IN ESSENTIAL PERSONAL SKILLS. MERCURY BOOKS, 1992.

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