APA citáció

Leeuwen Leonard C. A. van. (1967). On the endomorphism ring of direct sums of groups.

Chicago Style (17th ed.) Citation

Leeuwen Leonard C. A. van. On the Endomorphism Ring of Direct Sums of Groups. 1967.

MLA idézés

Leeuwen Leonard C. A. van. On the Endomorphism Ring of Direct Sums of Groups. 1967.