APA-čujuhus (7. p.)

COVEY STEPHEN R. THE 7 HABITS OF HIGHLY EFFECTIVE PEOPLE.

Chicago-čujuhus (17. p.)

COVEY STEPHEN R. THE 7 HABITS OF HIGHLY EFFECTIVE PEOPLE.

MLA-čujuhus (9. p.)

COVEY STEPHEN R. THE 7 HABITS OF HIGHLY EFFECTIVE PEOPLE.

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