Gaya APA

Edward Humphrey, Ph.D.. (1977). Encyclopedia International 16 ROYAL BALLET-SOFIA (1). USA: Lexicon Publications.

Gaya Chicago

Edward Humphrey, Ph.D.. Encyclopedia International 16 ROYAL BALLET-SOFIA. 1 USA: Lexicon Publications, 1977. Text.

Gaya MLA

Edward Humphrey, Ph.D.. Encyclopedia International 16 ROYAL BALLET-SOFIA. 1 USA: Lexicon Publications, 1977. Text.

Gaya Turabian

Edward Humphrey, Ph.D.. Encyclopedia International 16 ROYAL BALLET-SOFIA. 1 USA: Lexicon Publications, 1977. Print.