JOHNSON SPENCER. (1987). ONE MINUTE FOR MYSELF: HOW TO MANAGE YOUR MOST VALUABLE ASSET. AVON BOOKS.
Čikaški stil citiranja (17. izdanje)JOHNSON SPENCER. ONE MINUTE FOR MYSELF: HOW TO MANAGE YOUR MOST VALUABLE ASSET. NEW YORK: AVON BOOKS, 1987.
MLA način citiranja (9. izdanje)JOHNSON SPENCER. ONE MINUTE FOR MYSELF: HOW TO MANAGE YOUR MOST VALUABLE ASSET. AVON BOOKS, 1987.
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