APA
bird g. l. ., .article writing and marketing. new york: rinehart & company , inc.
Chicago
bird george l, .article writing and marketing. new york: rinehart & company , inc.
Harvard
bird g. l. ., .article writing and marketing. new york: rinehart & company , inc.
MLA
bird george l, .new york: rinehart & company , inc. .
