Arho, P. (1972). Skin thickness and collagen content in some endocrine, connective tissue and skin diseases: A roentgenographic and biochemical study.
Čikaški stil citiranja (17. izdanje)Arho, Pekka. Skin Thickness and Collagen Content in Some Endocrine, Connective Tissue and Skin Diseases: A Roentgenographic and Biochemical Study. Helsinki, 1972.
MLA način citiranja (8. izdanje)Arho, Pekka. Skin Thickness and Collagen Content in Some Endocrine, Connective Tissue and Skin Diseases: A Roentgenographic and Biochemical Study. 1972.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.