Παραπομπή APA

Janzen, E. (1976). Letter to the editor: Reproductive performance of beef cattle in northeastern Alberta.

Παραπομπή Chicago Style

Janzen, E. Letter to the Editor: Reproductive Performance of Beef Cattle in Northeastern Alberta. 1976.

Παραπομπή MLA

Janzen, E. Letter to the Editor: Reproductive Performance of Beef Cattle in Northeastern Alberta. 1976.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.