APA
Atʻayan Ṛ. A., . (1999). The Armenian Neume System of Notation. : Psychology Press.
Chicago
Atʻayan Ṛ A, . 1999. The Armenian Neume System of Notation. : Psychology Press.
Harvard
Atʻayan Ṛ. A., . (1999). The Armenian Neume System of Notation. : Psychology Press.
MLA
Atʻayan Ṛ A, . The Armenian Neume System of Notation. : Psychology Press. 1999.