APA (7e ed.) Bronvermelding

Droz, J. The Art of Being Happy In a Series of Letters from a Father to His Children: With Observations and Comments.

Chicago (17e ed.) Bronvermelding

Droz, Joseph. The Art of Being Happy In a Series of Letters from a Father to His Children: With Observations and Comments.

MLA (9e ed.) Bronvermelding

Droz, Joseph. The Art of Being Happy In a Series of Letters from a Father to His Children: With Observations and Comments.