Παραπομπή σε μορφή APA (7η εκδ.)

Tyrrell, G. (1904). Hard sayings: A selection of meditations and studies (6th impression.). Longmans, Green.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tyrrell, George. Hard Sayings: A Selection of Meditations and Studies. 6th impression. New York ; London: Longmans, Green, 1904.

Παραπομπή σε μορφή MLA (8th εκδ.)

Tyrrell, George. Hard Sayings: A Selection of Meditations and Studies. 6th impression. Longmans, Green, 1904.