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. .