Gaya APA

Hartshorn, W, C., Leavitt, H, S. (1940). The World of Music: Making Friends with Music Progress (Cet. 1.--). Boston: Ginn and Company.

Gaya MLA

Hartshorn, William, C.., Leavitt, Helen, S.. "The World of Music: Making Friends with Music Progress". Cet. 1.-- Boston: Ginn and Company, 1940. Text.