@book{spencer_2011, title={Francis Bedford, landscape photography and nineteenth-century British culture the artist as entrepreneur}, publisher={Burlington, VT: Ashgate Pub}, author={Spencer, Stephanie}, year={2011} }
 @article{stark_spencer_shih_chewning_wang_2009, title={Evaluation of keratinase stability in pelleted broiler diets}, volume={18}, ISSN={["1537-0437"]}, DOI={10.3382/japr.2008-00038}, abstractNote={SUMMARY Versazyme (VZ) is an approved keratinase-based feed additive produced naturally as a fermentation product of Bacillus licheniformis PWD-1. The experiment was designed to test the recovery and efficacy of VZ using typical feed industry pelleting parameters. The pelleted diets were conditioned to 85°C for 30 s and pelleted using a 4 × 32 mm die, cooled, and crumbled. A total of 192 male broiler chicks were fed a corn-soybean meal starter diet formulated at 18.5% CP to 21 d of age. The 4 treatments used in the feeding study were as follows: VZ 0.0%-mash, VZ 0.0%-pellet, VZ 0.1%-mash, and VZ 0.1%-pellet. Body weight and feed consumption were determined at 21 d of age. The recovery of VZ in feed was 93% in the mash diet and 66% in the pelleted diet. There was a 55-g increase in BW gain and 0.17 improvement of FCR when birds were supplemented with 0.1% VZ. Pelleting improved BW gain (P < 0.05) but did not significantly improve the FCR. Growth performance results indicate that pelleting did not affect the efficacy of VZ.}, number={1}, journal={JOURNAL OF APPLIED POULTRY RESEARCH}, author={Stark, C. R. and Spencer, B. E. and Shih, J. C. H. and Chewning, C. G. and Wang, J. J.}, year={2009}, pages={30–33} }
 @misc{spencer_1997, title={The landscapes of Louis Remy Mignot: A southern painter abroad, by Katherine Manthorne with John Coffey}, volume={74}, number={1997 Apr.}, journal={North Carolina Historical Review}, author={Spencer, S.}, year={1997}, pages={216–217} }