(2019). Cover for Vol. 11, No. 1.. Categories and General Algebraic Structures with Applications, 11(Special Issue Dedicated to Prof. George A. Grätzer), -.
MLA
. "Cover for Vol. 11, No. 1.", Categories and General Algebraic Structures with Applications, 11, Special Issue Dedicated to Prof. George A. Grätzer, 2019, -.
HARVARD
(2019). 'Cover for Vol. 11, No. 1.', Categories and General Algebraic Structures with Applications, 11(Special Issue Dedicated to Prof. George A. Grätzer), pp. -.
VANCOUVER
Cover for Vol. 11, No. 1.. Categories and General Algebraic Structures with Applications, 2019; 11(Special Issue Dedicated to Prof. George A. Grätzer): -.
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