APA aipamena

Leikola, J. (1994). Payment for blood donations. BMJ Group.

Chicago Style aipamena

Leikola, J. Payment for Blood Donations. BMJ Group, 1994.

MLA aipamena

Leikola, J. Payment for Blood Donations. BMJ Group, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.