Gibb, J. R. (1991). Trust: A new vision of human relationships for business,education,family,and personal living. Newcastle publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Gibb, Jack R. Trust: A New Vision of Human Relationships for Business,education,family,and Personal Living. North Hollywood,California: Newcastle publishing, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Gibb, Jack R. Trust: A New Vision of Human Relationships for Business,education,family,and Personal Living. Newcastle publishing, 1991.
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