APA (7th ed.) Citation

Johnson, G. (1972). 20th century orchestra studies: For trumpet. G. Schirmer.

Chicago Style (17th ed.) Citation

Johnson, Gilbert. 20th Century Orchestra Studies: For Trumpet. New York: G. Schirmer, 1972.

MLA (9th ed.) Citation

Johnson, Gilbert. 20th Century Orchestra Studies: For Trumpet. G. Schirmer, 1972.