APA

Papas A. S., Niessen L. C. & Chauney H. H. (1991). Geriatric dentistry. St. Louis: Mosby Year Book.

Chicago

Papas Athena S, Niessen Linda C and Chauney Howard H. 1991. Geriatric dentistry. St. Louis: Mosby Year Book.

Harvard

Papas A. S., Niessen L. C. and Chauney H. H. (1991). Geriatric dentistry. St. Louis: Mosby Year Book.

MLA

Papas Athena S, Niessen Linda C and Chauney Howard H. Geriatric dentistry. St. Louis: Mosby Year Book. 1991.