APA (7e ed.) Bronvermelding

Hanna, S. L. (1991). Person to person: Positive relationships don't just happen. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Hanna, Sharon L. Person to Person: Positive Relationships Don't Just Happen. Englewood Cliffs NJ: Prentice-Hall, 1991.

MLA (9e ed.) Bronvermelding

Hanna, Sharon L. Person to Person: Positive Relationships Don't Just Happen. Prentice-Hall, 1991.