Παραπομπή σε μορφή APA (7η εκδ.)

In memoriam: James Julius Halsema (1 January 1919-18 February 2005). In memoriam: James Julius Halsema (1 January 1919-18 February 2005)..

Παραπομπή σε μορφή Chicago (17η εκδ.)

"In Memoriam: James Julius Halsema (1 January 1919-18 February 2005)." In Memoriam: James Julius Halsema (1 January 1919-18 February 2005). .

Παραπομπή σε μορφή MLA (9th εκδ.)

"In Memoriam: James Julius Halsema (1 January 1919-18 February 2005)." In Memoriam: James Julius Halsema (1 January 1919-18 February 2005)., .