18 ([return])
Bobbitt, F. How to Make a Curriculum, p. 222. Houghton-Mifflin Co., 1929.
19 ([return])
Morgan, A. B., Elements of Art and Decoration, p. 33. The Bruce Publishing Co. 1928.
20 ([return])
Whitford, William G., An Introduction to Art, p. 186. Appleton Series in Education. 1929.
21 ([return])
Strebel and Morehart, The Nature and Meaning of Teaching, p. 177. McGraw-Hill Book Co. 1929.
22 ([return])
Lancelot, W. H., Handbook of Teaching Skills. John Wiley and Sons. 1929.