Cita APA (7th ed.)

Ullstein, S., & Burnett, F. H. (1975). The secret garden. Longman.

Cita Chicago (17th ed.)

Ullstein, Sue, i Frances Hodgson Burnett. The Secret Garden. Harlow, England: Longman, 1975.

Cita MLA (9th ed.)

Ullstein, Sue, i Frances Hodgson Burnett. The Secret Garden. Longman, 1975.