Laszlo Valko 1950-1970 : : twenty years in service of cooperatives.

MLA

Laszlo Valko 1950-1970 : Twenty Years In Service of Cooperatives. Washington: Paul O. Mohn, 1970.

APA

(1970). Laszlo Valko 1950-1970 : twenty years in service of cooperatives. Washington: Paul O. Mohn.

Chicago

Laszlo Valko 1950-1970: Twenty Years In Service of Cooperatives. Washington: Paul O. Mohn, 1970.