LAWS B G. (1923). CHESS PROBLEMS AND HOW TO SOLVE THEM. LEEDS: WHITEHEAD AND MILLER LTD.
استشهاد بنمط شيكاغوLAWS B G. CHESS PROBLEMS AND HOW TO SOLVE THEM. LONDON: LEEDS: WHITEHEAD AND MILLER LTD, 1923.
MLA استشهادLAWS B G. CHESS PROBLEMS AND HOW TO SOLVE THEM. LEEDS: WHITEHEAD AND MILLER LTD, 1923.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.