APA-viite (7. p.)

Leroy Wilson, J. (1970). A generative phonological study of Costa Rican spanish. University of Michigan.

Chicago-viite (17. p.)

Leroy Wilson, Jack. A Generative Phonological Study of Costa Rican Spanish. [Michigan]: University of Michigan, 1970.

MLA-viite (9. p.)

Leroy Wilson, Jack. A Generative Phonological Study of Costa Rican Spanish. University of Michigan, 1970.