referenceCitation: @incollection{free_john_brand_notitle_1970,  address = {London, GBR},  edition = {1},  isbn = {0-12-266650-X},  booktitle = {Insect {Pollination} of {Crops}},  publisher = {Academic Press},  author = {{Free, John Brand}},  year = {1970},  pages = {144}, }