Template:ISSN link/sandbox

{{#if:{{{1|}}}|{{#if:{{{2|}}}|[https://portal.issn.org/resource/ISSN/{{#if:1|{{{1}}}}} {{#if:1|{{{1}}}}}] (print){{#invoke:check isxn|check_issn|1={{{1|}}}|error={{Please check ISSN}}}}{{{br|
}}} [https://portal.issn.org/resource/ISSN/{{#if:1|{{{2}}}}} {{#if:1|{{{2}}}}}] (web){{#invoke:check isxn|check_issn|1={{{2|}}}|error={{Please check ISSN}}}}|[https://portal.issn.org/resource/ISSN/{{#if:1|{{{1}}}}} {{#if:1|{{{1}}}}}]{{#invoke:check isxn|check_issn|1={{{1|}}}|error={{Please check ISSN}}}}}}}}