Παραπομπή σε μορφή APA (7η εκδ.)

Cromwell, A. D., & Davis, K. C. (1915). Agriculture and life: A text-book for normal schools and teachers' reading circles. J.B. Lippincott company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cromwell, Arthur D., και Kary Cadmus Davis. Agriculture and Life: A Text-book for Normal Schools and Teachers' Reading Circles. Philadelphia, London: J.B. Lippincott company, 1915.

Παραπομπή σε μορφή MLA (8th εκδ.)

Cromwell, Arthur D., και Kary Cadmus Davis. Agriculture and Life: A Text-book for Normal Schools and Teachers' Reading Circles. J.B. Lippincott company, 1915.